Hoist for cab?

[GPintheMitten]

Where are you going to park the tractor after you put the cab on? Leave it outside? Have you considered, if it is possible to provide a little greater clearance on the doors? Maybe a different engineered beam or header that would allow more clearance?

 

[GPintheMitten]

Here's another thought. Maybe you could take the rear wheels off inside the barn... and set it on something that you could slide it on to get it out of the barn and then put the wheels back on.