For what it's worth, the following 3 implements can be used on the 3pt. Boom pole (engine hoist), dirt scoop (poor mans fel/bucket), Box Blade for land leveling. Even harder to find is used 3pt forklift (not forks, something that lifts). A FEL with forks requires one of the larger compact tractors. Or one of the "regular" tractors from the 60-80's era before they started making them lightweight. Kubota loaders use a numbering system where # is approximate lifting power at the curling pin in kilograms. ex. LA545 should be around 500k or 1100 lbs at curl pin, subtract weight of forks, distance from curl pin, around 700lbs estimate on usable lifting weight.
An 50 year old tractor should handle your needs nicely Tractor House website or magazines will help you decide what you need and approximate selling prices. Tractordata.com will allow you to research the tractor/fel specs. Good luck on your search.