nitrous newbie questions.

I always ran an extra fuel pump and line from tank to nitrous system. However you might be OK with your existing line if its big enough and using 100 or less shot of nitrous.

Can't remember the jet sizes but I'm sure there is a chart someplace

Retard timing a little seems like it was about 2 degrees for 100 HP nitrous shot

Colder plugs may be in order

Can't remember all the specifics but sounds like you have most of the main information.

Might find some help here

http://www.nitrousdirect.com/nitrous-instructions.html