hmm, 13's eh? you might have some issues then. i don't think t9 makes the dominator anymore. it used to be their big binder. you might have to take your boot with you when you go look at the bindings to make sure they fit....and now is the part where you say your going to buy them online or don't have a store to go check them out in person. lol. if that's the case then you might be S.O.L. unless you can find somebody running the same setup as you.
start rant. the only sure fire way to see if it's all going to fit together is to actually do it at the shop. i'm not saying that you have to buy at that shop but at least go check it out. i know you can find great deals online but nothing beats being able to check out the gear for yourself. try to support local stores first and foremost and buy online for the stuff you can't find locally. my 2 cents. rant over.