Rhino's kick ass.
Remember all the rules with LiPo safety.
And a 7.4v 20C 1600mah LiPo will give you the same ROF as a 9.6v 1500mah NIMH
+1 on the AN/PEQ-15, they're fantastic. Not only do they look cool but you have room for a 1600mah LiPo, triggermaster, and PCB