This film cutter is very handy:

I bought mine from another eBay vendor. It makes the cutting of all negatives and slides much easier.

Here is a link to the Gepe website - in particular the hand mounting press that definitely adds convenience when you are using Gepe mounts. You don't need the press, but ...

In some markets, there are lots of used medium format projectors available. In others, probably not.

They are quite large and heavy.