need input on 318 build

first off, i did a search and couldnt get the answers i was looking for. i sold off a lot of stuff and i have about $1500 to work with. i already have a forged 273 crank. my plan with this engine is street/strip/and occational track days (im 10 miles from Road America) so this engine will take a beating. im shooting for 450-500 hp and 7000 rpm.

im just doing the short block right now. heads and cam will come later when i have more money. im thinking forged crank, scat I-beams with ARP bolts (rods are rated to 650hp, whatever that actually means) and kb 167 pistons. do you think ill have balancing issues? also are the scat rods as good as they say they are?

rod weight-595g
piston weight-507g
pin weight-132g
paired with factory forged 273 crank

Will the parts take that kind of rpm? i cant afford forged pistons so i guess im just looking for input on what kind of rpm would be safe then. also do i need main studs? oiling system is taken care of, just worried about the nuts and bolts part. also any specific ring recommendations? any input would be appreciated.