dude. read the BAJILLION (not an overstatement at all) threads on how the TRD pro really isn't worth it... sorry to burst that bubble but i think you would rather know that now before you dip yourself in a big vat of debt for a not-that-great improvement over the other 4WD models and trim of this 4runner. plus you can add most all of the visible difference from a TRD pro to a 14-15 SR5(P) and TE(P). So all you are getting is an overpriced suspension (akin to the Bilstein 6112/5160) and the chance at inferno red coloring.
Charles Maund Toyota in Austin has a couple 2015 Trail Editions (one TE and one TEP, niether with KDSS but you must not care about that since you want a TRD Pro anyway) and MANY 2015 4WD SR5s sitting on the lot and I bet the sales people over there want to make a deal before 2016 stock heads their way...
thats the direction i would go if i was you, and if i could have found a trail on a lot in TX in October last year when i was looking i would have bought a new one, but there were none... Happy hunting!