jzemaxx,
One of my truggy is running 5S2P (TP V1 extreme packs, similar to the High Performance series
http://thunderpowerrc.com/html/high-performance.html) with the Neu 1521/1Y and I get over 30 minutes easily without stressing anything geared for 34mph (46mph on radar with tire ballooning) and I can also go with 6S without changing gears, but run time is still over 20 minutes with 5000mah packs. This truggy weighs over 15lbs. with the 5S2P set up. Now the 2200kv motor would be good with 4S or even 5S and you gear to the speed you want. You will eventually go with a smaller pinion which will help with the torque. Now a 1515/1.5Y would be the hot ticket for 6S in a truggy and gearing it for the speed you want might even net you 30 minutes if you use a smooth trigger finger.