I'll recommend taking a look at a few things in response to the CDL comment. If you convert your bus to an RV you won't need a CDL. In some states, it seems, the conversion is just a bit of paperwork and you can be driving your 'bus' right away as an rv. In others (I'm living in MN) you might need proof of completed conversion to retitle.
The whole reason the title of bus or rv is important is for two reasons I guess... If you need a CDL or not and bus insurance or rv insurance. Insurance is the big question... But you'll see that the more you read this forum...
So I guess what I'm trying to say here is do your research... Sounds like you are giving yourself plenty of time so that's great.
Personally my bus is still a bus and it's insured as a bus. Sure, it's a little more expensive than RV insurance but my conversion is far from complete. Buy yes. I need a CDL to drive it even though all the seats are out and all that stuff.
But I'm getting fixated! The best thing for it all is to read as much as you can... There's a wealth if info here... And read as much as you can about bus options. There are a little options out there... But I'm sure you know that by now ;0
My wife and I are viewing the bus as an investment... Yeah it might be 20 grand to get started... But if we live in it for a year and a half we've saved that much money in rent alone... It's a lot to think about...
No matter what I'll just say this... Google is your best friend. No matter the question/idea you have it's very very likely someone else has already posted about it in this forum ;0 it's great.