If we judge by Dad's notes, it wasn't until he was around thirteen that he learned to limit his sensory radius, and I'm far from that yet. And even in the practice of iryo-nin, I haven't been able to apply my abilities yet — I haven't even approached healing with the chakra cloak, limiting myself to only physical injuries.
In the next few years, until I receive the next degree, there's no need to even think about it. But what's most unpleasant is that the more I improve my control, the more sensitive I become, and with it, the distance at which I can detect someone else's chakra increases.
Pa gradually increased control smoothly and evenly over many years. I, thanks to clones, intensive training with Rasengan, and chakra manipulation, made big leaps in this direction, not having time to get used to the enhanced abilities. Which is why I suffer.
Moreover, I think I'll have a greater range than Ryuta simply because of training as an iryo-nin. So, a distance of seven kilometers is not a limit for me! However, if we recall the sensors during the Fourth Great Ninja War...
They covered hundreds of kilometers, albeit with the help of various devices, so there is something to strive for. So, before entering the academy, I need to improve my sensory abilities. I think a year and some change will be enough for me to get used to it at least a little. In the worst case, two. Again, the Shadow Clone technique helps with this.
By the way, an interesting feature — clones have much less sensitivity than the original. Three hundred meters and change compared to two and a half kilometers. And it's not clear why there's such a big difference. The only thing that comes to mind is the need for a full-fledged source for mixing yin and yang, instead of some kind of resemblance to it that each doppelganger has.
However, even such a small radius helps my clone, constantly surveying Konoha, not to intrude into places where it could be dispersed. Of course, adding another constantly active Shadow Clone to the existing six is quite stressful, but knowledge of the terrain, as well as the location of various institutions, shops, stalls, administrative buildings, and the like, will be very useful to me in the future.
The same goes for Momo, who will have to work in one of the shelters after the end of the Second Great Ninja War. How many key characters came out of there in general? Immediately, Jiraiya, Orochimaru, Minato, Kabuto, and Anko come to mind.
However, I'm not sure about the last one, only Orych knows for sure, but since she hasn't even been born yet, everything can still change.
The next serious problem that requires a lot of time is increasing the speed of chakra circulation through the channels and saturating the body and skin with chakra. Uzumaki traditionally rely on muscles when they seek to increase the speed of their movements rather than on acceleration with chakra.
Besides the obvious obstacle in the form of increased chakra density, which makes faster circulation through the channels more difficult, excellent control is also required for this action. Thus, only a few Uzumaki who have achieved considerable success in controlling their vast chakra reserves can accelerate more than threefold.
On the other hand, this weakness is more than compensated by the excellent result of strengthening the body — where an ordinary shinobi would receive quite a deep wound even after saturating the area of impact with chakra, Uzumaki would get away with just a small scratch on the skin, thanks to the feature of their Kekkei Genkai.
The most striking example of such invulnerability can be Hoshigaki Kisame — thanks to the sea of chakra, his body doesn't even need additional reinforcement, hence such durability. It can be said that with a healing sword, he came closest to Uzumaki in terms of survivability.
Of course, by the age of twenty-five or thirty, I'll become like that too, but I'd like it to be earlier, given the approaching wars. I can endure much more damage now than even an average Chunin, but these processes need to be brought to the level of bodily reflexes — then the survival rate will significantly increase as strength grows.
At least you can be sure that by the age of twelve, even experienced Jonin and Anbu will have to work hard before burying me. If it works out at all. In simpler terms, well-established foundations at an early age guarantee that I will achieve the rank of Jonin earlier than those who are currently slacking off and training half-heartedly, like Shikaku.
That's why the iryo-nin direction is my main one — those who can heal themselves during a fight are much harder to kill than all other opponents. Tsunade proved it.
Moreover, in Taijutsu, I'll be practically invincible — clan Hiden techniques will provide the opportunity to stop the enemy for at least a couple of seconds, and then there's Chakra no Mesu, paralyzing the nervous system with a couple of touches, which I'm already quite good at, an old-fashioned kick in the groin, or applying a suppressing seal, allowing me to make the opponent not much more dangerous than ordinary bandits right away.
Of course, this is if we don't consider monsters like Guy and Lee, who can manage without chakra in Taijutsu for some time. I doubt there are more than a few of such maniacs in all elemental countries... Except for the entire Uzumaki clan with their monstrous training!