The factory build is incredibly strong for a powdermetal crack rod, actually a 6.1 Hemi piston too, so 700-800tq divided among 10 cylinders is safe as long as the air fuel is 12 or less. The ZEX or Nitrous Express kit we use here is set up for 35 shot to 150 shot (125 on the Zex) and extras such as a purge or bottle warmer can be bought too. I am in Florida, so a bottle warmer and purge are not must, (CNC technology is 10 times what it was 8 years ago) but north of the mason-dixon line, you should consider it to keep the bottle pressure around 1000psi.
I am also a vendor for Wilson Manifolds, one of the best nitrous outfits on the rock. If you want a direct port 10 nozzle kit hidden under the manifold, these guys have done it for me before.
Nitrous is about one thing and one thing only....torque.
Make sure when you start installing your kit, use a Air Ratio gauge or get to a dyno, load your safe timing SCT program to test, then up the power level.