Welcome "shipmate" ;-) Old Navy
here too. I was a bubble-head, so these floaty boats were a real change! I love your plan, even without details, it's one of the best posted here (and there are a LOT)!
The only thing I would point out is a year is a very FAST trip around by most standards. IF it were me and I only had a year, I'd only do the Caribbean
, or S. PAC., or great loop (well that's an old guy trip), or Mexico
....well you get the idea.