6 months ago I was exactly where you are now. I thought I could save money by doing it all myself, so I set out to cobble together a repair lathe. My first approach was a Cowboy lathe, but that didn't really do what I wanted, so I built my own "new and improved" Cowboy lathe. I still have it and it is great for tips and cleaning and sanding/smoothing shafts. But you can't turn a shaft on that device and you can't do much anything with a butt.
So then I set out to put together something that could. What I have ended up with (edit) something that looks like (/edit) a cross between a Hightower and a Brianna. I'm happy with it and I can now learn to start building a cue that I can eventually play with. (I know you said you don't want to build a cue, but if you can turn a shaft down, then you can build a basic cue.)
But did I save money? NO
Did I save time? NO
Did I "Do it myself" YES
But along the way I learned way more about DC motors and DC motor controllers, DPDT switches, leadscrews, bearings, chucks, ways, tenon dies, taps, etc than I ever thought I'd need to know. I am GLAD that I did, but it took a long time and now I'm finally starting to do some tips and ferrules and basic repairs. I'm working on my first shaft as well.
So, if you're in a hurry, don't do it my way.
If you want to save money, don't do it my way.
If you like to DYI, and get satisfaction out of that aspect of a project, then you might want to do it my way (I can perhaps give you some help.)
But most importantly, you've found the right place to ask questions because the guys (I don't think there's many gals) on here are the
MOST HELPFUL BUNCH you will find.
My 2 cents,
Gary