In Southern Thailand
I assume you will be heading north to Chiang Mai and so on. You should first stop at the Riders Corner in Chiang Mai. KTM Phil knows all the good routes through North Thailand, Laos, and Cambodia.
Then when you head south, I am just north of Phuket and can sort you out with a great place to stay and a few places to see in South Thailand.
PM me when you are coming through.