Starting mid-July, for the first 3 months of my LONE4 xICN, I will only be able to do the following cities, since I am studying in RIO:

1st segment by land to FUK (1st stopover), then to BKK (2nd stopover), then NRT-DFW-RIO (1st stopover in S. America)...

1. Is this enough miles to complete Platinum challenge?
2. Is the above routing even possible?

Thank you!