hi patrnflyer
if you have the chance to start from a blank piece of paper, then i think we, who have spent the better part of 2k $ on TP5300's, kokam3200's, polyquest 3700's and all the other "wonderbatt's", should give you the proper state-of-the-art advice, take you by the hand and lead you straight to TP's new LiteStorm. 10S2P4200 will give you plenty of flying time, they weight only 30 oz. (don't believe that overweight crap, light airplanes always fly better. period) ok, some may now argue with me for hours over that one, i know. but heavy batt's are BAD weight, better invest in a good power supply for the servos and beefier servos are GOOD weight! back to the LiteStorms: they are bloody amazing, the voltage is rock steady under load, and they keep cool. and they work perfect with your charger/balancer combo. it's the new gen, so save the money and make the short cut!
cheers,
roger
btw, nothing wrong with your other choices, the OXAI would be mine if i had the dough, and AXI-outrunners are fine if you don't like the sound of the 30-year old kitchen aid in your mom's house, that's at least what i always tell wolfgang matt when i want to bug him...castle PHX110HV is my ESC, the 85HV blew, and this is another example of GOOD weight!
nuff wise ass stuff for t'day