Some times when traveling with 3 i have found that i have been able to purchase 2 tickets at the saver rate and one at the double full fare rate. i know this is not the best deal but when you need to fly in peak times it is sometimes necessary,
one ther rout you may look at is getting the AA cards visa and amex for 50k each, then adding the spg for 30 each. tha would get you 130k aa miles each, that would get you two savers and one full ticket