Hello....
Well,it depends.If your PSA allready have their own PSAs,then better for him is to become BTL and use all advantages that this leadership status offers.But,if your PSA still dont have his PSAs,then its better to wait to become leader.its not difficult to become BTL in a first months,but its not aesy to retain that status if you dont have a team.so,without working team its better to wait with Team Leader status...