Many thanks for suggestions, especially Gardyloo's idea of transiting JFK on the way to South America. That also helped my seasonal timing so that I can use the summer-only DFW-ANC flight (though it has not been loaded yet, so will ticket another city and pay the change fee when DFW-ANC is loaded for next summer.)

KUL instead of BKK is another good idea which adds about 900 miles. However, for other reasons I decided to stick with BKK.

As it happens now, with positioning flights included, I will earn more than 100K EQPs next year so tweaking the RTW for max EQPs is not so important.

Now, if I could only get the online tool to complete the purchase: getting 15012 error - see post in online tool bugs thread.

Happy Travels.