[Question] best ways to freeze lunch meats and cheeses?

I recently got my hands on a very old but still totally serviceable full-sized deli slicer, and my local restaurant depot is very liberal about handing out day passes to anyone who walks in and asks for one, and the savings buying a whole log of meat and slicing it yourself are pretty bonkers, totally worth the pain in the ass that is breaking it down to clean when I'm done.

Of course it's just the wife and I, and 6lbs of Pastrami is a lot for us to go through before it goes bad. So far I've mostly been getting a few friends to chip in and divying up stuff between us or doing a little bartering and trading lunch meat for homemade bread and such, but I'd like to start freezing some to have on-hand.

Anyone have any experience with this to share? I have a vacuum sealer and a deep freezer to work with.

Which meats freeze well, which don't? Is it worth trying to slice it then package and freeze it in smaller portions, or should I freezer larger chunks of meat then thaw and slice it as-needed? Should I just abandon the idea of freezing and stick with the little ad hoc food co-op thing I have going?

Of particular interest to me is homemade roast beef and turkey, I'm never going back to the deli counter for those after I've been making my own (those boneless turkey roasts are amazing for this purpose, even if I'm sure there's a little meat glue involved in them)

Also cheese, I've never really contemplated freezing cheese until I found myself with a 9lb block of Swiss in my fridge. My gut says cheese doesn't do well in the freezer, but my gut has been wrong before.

I also kind of like the idea of having pretty much a lifetime supply of prosciutto in my freezer, although a quick Google search seems to tell me that prosciutto does not freeze well at all, which seems odd to me, since it's pretty low-moisture I would have thought it would freeze spectacularly well.

Besides that, anyone have any other cool ideas about what I can do with a slicer? I've already sliced down some beef to make cheesesteaks, and when I get my smoker up and running when the weather gets nicer I'm going to have a go at making my own bacon, and will probably use it to slice down beef for jerky as well.