I have done that type of swap once. I took my time (lots of time!) and it came out fine.

My constructive suggestion is make sure to account for the small stuff... throttle linkage, heater hoses, wiring ect. ect. Does the BB carb need at least a rebuild? Or new carb? Inspect, clean and grease the bulkhead connector as minimum. Hopefully the manifolds on the BB are suitable for its new home.

There is lots of stuff that may need attention to make sure the end result is fun and reliable even starting with a basically healthy engine and transmission.