Again, without personal experience myself
... not for long though ... It seems that the 65 is enough, even for the rudder (though I think 81 is probably better for the rudder). Charging on triton shouldn't be a problem. The new crop of 2100 4S batt (Evo 2170, TPX 2070, 2200) should do the job and give you 6-8 min of mixed 3D, pattern type flying.