aktchi

This is fine. In a way this is not "optimal" because you have several thousand flying miles left that you'll pay for, but no segments to use them. You have not used your one open-jaw allowance, so if you live in RIC and it would be more convenient to return to NYC, you can do that: MIA-CCS-LIM-GRU-AEP-SCL-AKL-SYD-SIN-BOM-AMM-IST-BUD-HEL-VIE-MAD-JFK

For a different take altogether, if this begins to appear too much travel in one go, the SA + ANZ part of your trip, beginning and ending in RIC, will fit nicely within a 25K mile level award:

RIC-MIA-CCS-LIM-GRU-AEP-SCL-AKL-SYD-DFW/LAX-RIC (24907/24964 miles)

Then you can do an Asia+Europe trip later, perhaps exploring Asia more throughly: Tokyo, Seoul, HKG, Bangkok, Bali, Singapore, etc. I am not a big fan of flying around within Europe: I'd suggest getting to one city, doing Europe by train, and then flying out of another (thus taking advantage of your OJ).