Which rear 5100's for 3 leaf AAL

I have spent hours going through 5100 and/or AAL threads and haven't bumped into this question.
I am looking to order the Bilstein 5100's all around for my '09 Tacoma Off Road but I am not sure which rear I need to order; the 0-1.5" or the 3"-4" lift. I am not looking for any real lift, were the problem comes in is I plan on adding a 3 leaf aal sometime in the near future. As I understand, because I only have the 3 leaf stock springs, I'll only need the 1.5" Bilsteins (Rear Shock Part #: BE5-C478-T0), I am just concerned about the travel on the shock after the 3 leaf aal is installed. I don't want to miss out on this great forum deal from Down South Motor, I priced them locally and this is a great deal.Also any suggestions on the 3 leaf aal is always welcome and appreciated, I was looking at the: Icon 3 Leaf Progressive AAL, also from DSMS.
Thanks so much for any help. Craig