One of the problems with this sort of job is "scope creep". It seems to me that IF you can get the hubs off easily, you shouldn't have to replace the bearings. Some would say that on a high mileage car, you might as well do it while you're in there. But that means dropping the half shafts, and getting the stub axles out of the old bearings. Plus the pile of tools starts to grow.
Having done this job recently, one hub had to be torched off (we were trying to salvage the swing arm) which totalled the hub splines. Fortunately a spare was at hand. But then on another car, they almost fell off (previously removed I expect). So be prepared for this job to last days, not hours.
I'd be inclined to leave the bearings alone and see if the hubs will come off.
Prayers, penetrating oil and beer will help. You'll need some solid wheel chocks or rest car against solid wall.