I have two Forsters; one more or less permanently adjusted for 45-70. This caliber uses the large jaws, which are an option. The second press is for "other", mostly rifle. Adjustment of the "jaws" is relatively simple. If you buy a new one you will get a centering device which allows for you to hold a deprimed cartridge in place while you adjust the 3 tabs to hold the cartridges in perfect alignment for priming. Forster also makes a priming tool ($100) which is similar and very effective and quick for "hand" priming. The priming device on the press is more than adequate for small numbers of casings.
I'd buy lock rings by the dozen, perhaps getting 24 up front. You will use them eventually and they can be easily sold, as can the press ( if you lose your income or your mind).
The press can be easily taken to the range if you want to try out various loads.
If I had to let my presses go, it would be the Dillons to go first; as much as I love them.The Forster Co-ax press is worth every penny you pay for it.
Cheers!