@Lou***
Ahh, I see,
you know what? Given your travel plans as often as it is, I'd say disregard my "get a year extension" comment and go get the year long multi-entry Non-O visa from Savannakhet instead.
That visa is unlimited entry for the year it's good for, every entry gets you in for 90 days and it will be a better "fit" for you rather than screwing around with apply for the year extension, getting the under consideration 30 day stamp, waiting for the home visit, going back getting the extension and then buying a re-entry permit after that.
Sorry for the bad advice..
I think your first plan for the year long multi-entry Non-O from Savannakhet is the best one for you