This is the time line for the events that where changed from the og story if not on here the assume that its same as canon

4 years before great pirate era

.Roger pirates make it to laugh tale and disband

.Roger goes to south blue to be with Rouge

3 years before great pirate era

.Ace is born 

2 years before great pirate era

.Zoro is born 

.sanji is born 

1/2 year before great pirate era

.Roger turns himself in 

Frist year of the great pirate era

.Luffy is born and in trusted to Garp

2nd year of the great pirate era

.Rouge is killed by pirates protecting ace

.Ace is found and saved by Garp

. Garp takes Rouge's body to the east and buried her along side Roger