Thank you both for your insight. I went to AA's award page, and chose dates in April, ORD/JFK/JFK/EZE for the outbound and EZE/MIA/RDU/ORD American Airlines all segments, chose seats with insight from seatguru - only thing that is unknown is whether it is a zodiac or B/E aerospace craft - and apparently they can switch last minute. I guess as long as I can lie flat it doesn't matter, and drinking alcohol in flight gives me a headache
Next trip will be how to figure out how to max Chase Ultimate award points...ideas welcome!