Those are supposed to be pretty fun to play with RR. I had a couple of Kingman guns when I first started playing (not electric though). Now I have an Autococker.
Very sweet gun, lots of fun to play with, but not easy to tune or time for a beginner (spyders don't need to be timed). Buy a GOOD mask so it won't fog. I have a JT Flex 7 Ize. They are great masks, but the bottom of them are soft so the balls will deflect instead of break. This leaves NASTY welts on your face if you get hit there
Since your gun feeds faster than a normal Spyder, be sure to get a 12V revvy too, you'll need it. First upgrade you'll want is a barrel, and Lapco makes good mediocre priced ones (~$50). If you play a lot or plan in temps under 45' F, you might want to consider playing with compressed air too. It gets cold here and that made a HUGE difference when I switched. Too bad I haven't played in a while though.
I just realized that I rambled on forever about this, so I'll stop now
Congrats on the marker
