lookin 4 help for my combo

K id like to run 12.9s or faster without spend an arm and a leg and with mustangs theres so many different combo choices so heres what I think I wanna do, any help would b appreciated.

-125-150 wet shot (nos, nx, any others?)
-e303cam with 1.6 RR anything else like new pushrods? what length?
-Trick Flow Street Heat Intake
-C&L 76mm MAF with their 76mm tube
-3:73 gears going in shortly with trak-lok rebuild
-190 LPH fuel pump prolly walbro?
-King Cobra HD clutch? how come the frpp ones dont come with alignment tool?
-tearing the motor out and changing the rear main seal its been leaking for a while and doing all new gaskets & new oil pump aswell
-suspension wise not sure maybe aftrmrkt upper/lower control arms?
-70/30 shocks upfront and 50/50 in the back and maybe drag springs in the back with an airbag
-dont really wanna spend 1k+ on some nice alum cylinder heads, mite spend 500 bux or so on some used gt40s but how much hp should I expect to gain over stock ones with my combo? and how much will it hurt me if i leave my heads stock?
-For exhaust Im doing bbk shorty headers to h or x pipe to 40 series flows and side exit exhaust
-Tires, gonna b running slicks for sure on 15" turbine wheels

Am I 12.9s or faster? and will my motor handle a 150 shot a few times and have nothing to worry about? Anything else I should add?

Thanks!

so a few 150 shot runs wont hurt the motor then?

can anyone tell me 150 shot will b no problem and wut kind of gains i would expect from e cam, bigger maf and tb, bigger fuel pump and street heat intake?
Thanks

k thats good news all I wanted to hear thanks!