Which hemi? 6.1 for $4000 or build forged 5.7?

I'm going to stay N/A, so pretty much everything I want to do can be done with a stock 6.1. The components are good to 600 hp and 7000 rpm. The piston is susceptible to damage with detonation, and I'll be tuning this myself. But, a complete motor sounds really nice (seeing as I'm chasing bolts, timing covers, pulleys, etc etc).

The 5.7 forged motor will probably cost more, be less cubic inches, but I'll get rid of the susceptibility of the pistons. With the ported heads, I'll probably make more power. It would be good to 800 hp with 7000 rpm (with the rods I'm looking at), and could live to 8000 rpm with Sharadon rocker shaft tie downs should I ever feel the need.