if the proposal is to put a turbo larger than 60lb/min on it at any time then you should budget on replacing the crank damper. It's a reasonable bet that you'll want one for a 26 if you use the 26 crank - but don't trust me on that, as I haven't played with both to know the differences.
If you're going to want to make stupid power than you're looking at at least Camtech or Kelford cams with as much lift as the Neo head can be made to swallow (without shitting shims out! they are shim over bucket, remember), and at least 264° duration. Don't f**k about with Jap cams. If you're putting cams in, just put springs in too - especially if going for the largest workable lift and longer duration. There's no easily defined boost/rev/threshold for this. It just makes sense to do it.