My 360 build.

Cley, just let me say this (this is just me): You did well on stating a goal that would make you ecstatic, which would be high 12's. No way would I spend 1500 bucks on aluminum heads just to go high 12's. That is an amazing overkill. In fact, 360 smog heads with 1.88's would pop you in the 12's sleep-walking. 430's are an extreme overkill as well (no offense A/J, love ya man). Jumpin' Jehoshaphat!! Aluminum heads/4.30's, Custom converter, and all the fixin's, sounds like your shooting for low 11's. In fact, if you do a compression test on your car now, and it shows good, your current set up, in my opinion, should be well into the 13's, maybe 12's depending on all "exactly" it has in the build.

This is just me, just putting my opinion out there..... using my personal drag strip tested experiences.

OH!!! Yes, be a kid! Enjoy it man, it's a wonderful thing! :)
Yes this is true, but don’t we all know how just getting to 12.99 turns into just getting to 11.99 and so on and so forth. Room to grow in some of these suggestions.