Mine is bolted on using 1G manifold studs. I don't have the lift point installed though. As for manifold to turbo, just use two stock bolts and two evo bolts. You'll need 8 conical washers. That's all the FP hardware kit is. I highly recommend this manifold for any build. If it cost more that 400, then it's not worth it. But for less than 200 on sale, you can't beat it. The manifold hold the turbo perfect in the OEM location, unlike some tubular manifolds that cost the same. It's cast so it will last. It does give the exhaust a deeper roar at wot too. It sucks not having a oem look heat shield and I've heard of the ones built by a guy on tuners have been falling apart, but I still love mine.
As for your porting questions, yes the intake should be roughed a bit. This prevents fuel drop out. The exhaust side though I found flows best with a smooth surface. I never went to a mirror like finish but a nice 120 grit sand was good. That was my results back in the day when I was playing with a flowbench.