i would say try a different place that you got it aligned at... some places only do the 'make the wheel straight and let her go' method of alignment.
I don't have any suggestions other than that.
225/50/15's
~400whp ~280tq
tire pressure: 25ish psi for daily driving, 15ish if i needed it on the street.
no camber kit, no alignment, not lowered as much as you, but enough that lock to lock hit the fenders with the radials.
no traction in first, some traction in 2nd depending on the conditions, dead hooks in 3rd .... tires lasted longer than my motors did
honestly tho ... my tires saw all kinds of hellish rips through the street. Launches, burnouts from time to time, and lots of 1st and 2nd gear hell giving and they showed no signs of wear .. or at least no where near as much as yours do (and i tend to check up on your tires from time to time just to see).
I say your best bet is to find a good street tire ... and pick up some bias ply radials or slicks for the track. Take these bfgs and throw them in the trash. The bias plys won't last long either, but they'll be a world of difference compared to the bfg's at the track, last longer than slicks and you're not daily driving them anyway.... plus they're still DOT so if the time comes you can blow em on and spank some choads.