Your going to have to weigh the factors of what calibers your loading vs cost of components vs cost of bulk factory. I reload but the small pistol calibers of 9mm and 45 ACP do not save me any money at the rates I load. (lately it's been no loading bleh) When you catch a good sale on bulk plinker stuff it's still usually cheaper to buy factory for those calibers. Now, you can't put a price on the fun and relaxation loading your own stuff can bring. Since you already do that for shotgun, you have that to formulate into the equation. If you load for harder to find calibers and big bore rifle, then your saving can really add up quick.
If your going to go progressive, look at the Dillon 550 which you can start off pretty reasonably and then add all the bells and whistle you want for the most part.
I have been lucky enough to use 56Fordguys and we roll the 5.56 stuff off it pretty quick and with good return on investment except that we stop loading when we talk (safety) and that slows the output down a bit.
If you get the tool heads set up so you just switch them out, you can roll a couple of hundred of whatever in an evening after work and go shoot.
I still use an old Lee Anniversary press to load my rifle stuff as I like the time in the shop and the quality of the single stage press for that kind of work.