Can someone school me on the best option to book a one-way award tix from SGN to IAH?

Datapoint:
*100k with Skyteam, no status
*65k with Vietnam Airline, no status

Timing is flexible, probably travel sometimes in July. My goal is to minimize points usage so economy is probably okay.

Alternative:
*100k with United
*100k with British Airways.

Thanks in advance.