yeah, i haven't heard much about venom, mostly about NX and NOS.
i've got a friend running a DP 100shot on his RSX-S and he's still doing fine. but he's selling the kit now, because he wants to go turbo.
i think with a 7a-fe u should be a little conservative, like 50-60shot. on a 4a-fe though, u could probably go up to like a 75. as long as u have all the safety accessories like rpm pills, window switch, etc., you should be perfectly fine.
btw, check out the clubRSX nitrous forum. there are some really great ppl on there. only two ppl there have ever blown their engines, one was cuz he was trying to show off to the ladies, and set his window switch to 1500 to do a burnout in an auto :lol: , and the other was something silly like that, but i don't remember what it was.