Covid has changed things, but simple ideas from me would be to set a challenge at the local fitness/health centre or get a couple of rugby players in from the clubhouse which is not far away. This is all assuming other routes, like younger relatives is not an option.
Personally I would remove the table, head and (maybe) the cross slide, then lift it in two stages – first to get it off the floor (as high as practical) with an inclined plane arrangement, then a simple lift onto the bench.
I’m now the wrong side of 70 and with a quad bypass, so heavy lifts are mostly mechanical (Aldi electric hoist, teleporter, or pump (pallet) truck are all options for me, dependent on situation. My chain blocks don’t get much use these days. Back in the 1970s I used to remove and replace my cortina engine(s) on my own, using just a rope around the engine. so nowhere near as strong as back then.🙂 But I did load a lot of hay bales with a pitchfork back in my teens and twenties. So SOD is exaggerating a little bit.
As per Bazyle would work. If doing that I would have sufficient pallets/bearers available to insert under the mill so any failure could not mean more than a couple inches of drop to a secure base. My brother and I, together, would likely just lift the thing from about a foot off the ground onto the bench. Job done.