That VIN tells me it is a Blue Bird bus body with an IHC chassis. Other than that, not a whole lot.
In regards to a CDL, the need for a CDL is determined by how the vehicle is being used. If your bus is retitled as an RV it doesn't matter how large it is all you need to drive an RV anywhere in the US is a regular driver's license.
If however you use your bus to transport people you will not only have to get a CDL to drive your bus but you will need to get a USDOT number and a MC number and operating authority in your state to operate your bus. It becomes a big deal and the insurance for transporting people costs between $1K and $2K per month.
As it was noted above, you can get a semi-truck with tandem drive axles, air brakes, and a 53' trailer that could gross as much as 80K lbs. and you would not need a CDL if the whole rig was retitled as an RV. So regardless of how much the GVWR of your bus is, if it is titled as an RV you will not need a CDL to drive it or a USDOT number to license it.
And it isn't that we are all adverse to getting a CDL. The problems with a CDL is the way in which the FMCSA has become so anal about crossing every 't' and dotting every 'i'. Think in terms of joining a random drug testing pool, pre-employment drug testing for any drivers of your bus, DOT physicals every two years, hours of service rules, Electronic Logging Devices on all 2000 model year and newer CDL vehicles, and complete driver files with contacts from all pervious CDL employers are just a few of the fun activities you get to enjoy operating a CDL vehicle.
https://www.fmcsa.dot.gov/
The above observations are not concrete but are pretty much the rule out here in WA state. We have driver's licenses with endorsements. There is no commercial CDL/non-commercial CDL and there are no classes of driver's licenses limiting the size of vehicle you can drive if it is NOT a CDL vehicle. But once you get into the CDL endorsements you have to pay for each endorsement--passengers, air brakes, Class A/B/C (defined by the size of the vehicle and combinations), tanks, triples, haz mat, etc. The only other endorsements are for motorcycles and they now come in several different types.
At least here in WA state, if you do NOT use your bus in your business (food cart, mobile hair and nail salon/tattoo parlor/doggie salon/etc.) there shouldn't be any problem retitling your bus as an RV. If you then build or have someone build you a trailer that could be your mobile business location you most probably wouldn't run into any problems as long as the weight of the trailer was kept under 10K lbs. Any trailer that has a GVWR of more than 10K and is used commercially requires a CDL driver to drive the vehicle towing the trailer. The truck might be a 1-ton dually or your RV but once the commercial trailer goes over 10K lbs. it becomes subject to the CDL rules. I understand NY is also very persnickety about trailer weights.
If you converted the last several feet of your bus into a storage area that you packed all of your business junk and plunder into it, unless you actually had customers coming onto the bus, I see no reason why your bus would have a problem being titled as an RV.
So trust me when I say that making sure your bus does not seat any more than 14-passengers plus the driver and it is retitled as an RV is one of the most important things you do as your convert your bus.
If your bus is not retitled as an RV the odds of you ever getting stopped and becoming subject to a USDOT inspection are closer to none than slim. But you really do NOT want to run afoul of the weight cops as the fines start in for some of the violations at $10K. And in some jurisdictions fines from unsuspecting people is how they make their budgets balance.
I don't want to rain on your parade but I want you to clearly understand the problems you can encounter if your bus is not titled as an RV.
Good luck and happy trails to you.
