340 stroker kit w/cast crank good or bad?

I bought a cast because I got a deal on the crank. I had it internal balanced but had to pay extra for mallory metal to get the balance. I don't know if the mallory would be needed with the forged. But the big question is, what are you going to use the engine for. If it is a street car /cruiser then cast is ok. If you are going to race it and push to the max (7000 rpm or 600 hp), then definitely go forged. Stroker is great. Super torque, mine made 520 hp and 540 lb-ft.