A friend of mine wants me to take some pics of his "rapper" friend (he's trying to promote him right now. SOOOOOO they want to do it late at night on the brooklyn promonade!? Never did anything like this i'm used to shooting kids and babies in natural light during the day!? Any suggestions?? I have the Nikon d90, a 50mm 1.8, 18-55, 28-70, 55-200, 70-300. Also have one of those nifty little fisheye lenses, and yes of course a tri pod, and also an sb600 speedlight. (just so you know what i have to work with!) THANKS FOR THE HELP!!!!