Eric for a slightly larger mast than what you would want to mount on the 3 point set up. you might consider fabricating a semi direct mounting to the rear axle housing bringing it in closer to the tractor. the lift cylinder arms of the tractor could be re-positioned and used as the tilt back for the mast.
Of course doing this would make the tractor a dedicated forklift, but there is another way. Mount the mast between the 3 point arms to the rear end on slip over sockets and clamp pieces to the cylinder arms to allow them to have a higher connection point to then connect via a short link bar to the mast for tilt back.
Now all you have to do to remove the mast would be to back up to a stand for the mast to be cradled in, disconnect the auxiliary hydraulics and un pin it then drive away.
Post pictures of your tractor with tape measure showing the distentions and pictures with measurements of the mast and I can draw up a quick release design for you if the mast will physically fit.