My advice on tooling is to get what you need at the time.
Of course, when you buy something like socket wrenches, it is much cheaper to buy a whole set. Are you going to be replacing bearings every day for profit? In that case, a set of collars is probably warranted. In my case, I use my press for a lot stuff besides bearings. In the US, most domestic electric motors will be 1/2" or 5/8" shaft. One doesn't need a whole set for that. I make what I need or improvise. Deep sockets for wrenches work well. Attached is a picture of my press. Most of the tooling I use is located on top. I have had the press for about 18 years. Before that, I had a DIY version without a pressure gauge and remote hydraulic. I find both enhancements worthwhile.
As for a sheet metal brake, I suspect a finger brake aka box and pan type would be more useful than one more limited to single or opposing bends rather than boxes. I also use my press as a press brake. It is much easier to get nice radiuses for metals like 2024-T3. I was able to pick up some used dies for $0.10/# (1980's) at an industrial junk yard, but for occasional use, mild steel will also work.
One thing to consider is a decent shear. A stomp shear is far easier to get nice cuts with then a hand shear.