Running over highways 11+ hrs per day OTR will be very different that driving a city bus.
I'm assuming that you make $34-38k/year now. You will likely take a pay cut for the first 1-2 years. I'm just about at the 1 yr mark and I've made $34k with a good LTL company.
On the plus side you will no longer have to live in a big metro like Atlanta if you don't want to.
You may want to look into local work like construction supplies, food service, LTL etc. A bus is just a straight truck with difficult cargo
You may be able to get some credit for your experience in other local driving jobs.
BOL