Might I suggest that you keep looking. The cost of having a manual transmission changed to an automatic can exceed $10,000.
Is far better to spend more up front to get what you want than to try to save a little & end up with something you don't want that will cost more in the long run.
There are some great values to be had on nice, well built coaches. Just have to wait till the right one shows up. May take a few trips to see coaches that don't match the description, but that is part of the journey.
I started with a less than perfect bus & chased that dream collecting parts to change it into what I wanted. 10 years later, My Wife found our dream coach on the internet one Saturday night. The following Friday after a bunch of phone calls, I had a one-way ticket to see it in person. Ended up buying it & driving it 1100 miles home. Buying this one was the best thing I could have done. Lots less money & lots more fun NOW!
Good luck, whatever path you choose.