Diesel Bombers - What kind of spark plugs should I get?

Yeah that's right I'm a "newbie"! I figured I would go ahead and fill out this little intro deal so here goes. I have had a lot of different vehicles in the past, but never a cummins. I assumed that the losers that drive around my little town blowing smoke in there 400k mile rust buckets were representative of the entire cummins community. Long story short, well maybe not so short.... I had a detroit 6.5 Chevy that I quickly sold, then a 97 powerstroke cclb, that I loved because of its tank-like build, but, it was a dog! I finally found what I believe to be a decent diesel truck however and so far I love it! My truck is a 99' 24v cummins 4x4 4 door long bed srw. When I purchased the truck (4 days ago) it had the following mods/ upgrades-
Air dog 2 165, s&b cold air intake, bd diesel everything front end related, fire punk torque converter, 2 month old rebuilt stock Tranny with modified valve body. Isspro fuel pressure, Pyro, boost gages, 5 inch mrbp exhaust w/ 6 inch tip, leveling kit and add a leaf, studded head, New gasket and a few other things I can't remember right now.
I have done a few modifications of my own too, such as-
Edge drag comp, DAP 100hp injectors and is currently in the shop to get a new set of 315 70 17 kumho venture mt's. I already installed the edge drag comp and Damn is it fun!

Sorry for the long first post but there it is, give me your opinion guys and gals! Thanks!