Nitrous can be very safe if you are realistic with your goals. Personally I love the wet shot because I can adjust the air fuel ratio NA and air fuel ratio on NOS separately. Then go to the drag stip run as fast as I can NA. When I have all the shifts perfect then I turn on the bottle.
If you are going with a "larger shot" you should use a dedicated nitrous piston ring like a hellfire ring, Also a real nitrous piston moves the top ring land down. If you are using off the shelf pistons check the strength of the pins. Do not assume the ones the came with the pistons are strong enough (I just broke one in half). Cylinders are preped differently for the harder nitrous rings. If preped wrong it will burn oil.
With a smaller shot you don't have to worry about dedicated engine parts. The only other thing I would suggest that has worked for me is using a wide open throttle switch. So the nitrous is on on at WOT. If I felt the back end starting to get light if I pull out of the throttle even a little the niitrous is off.
From your pic it looks like you have a Gen 2. A lot of room under that intake to hide some jets. You would just need an artist to do some plumbing and run some lines. Unless you want people to see it