Lately there's been a near-daily debate about fast, vintage 50's, and that A 50 1.7 seems to get a lot of respect. Obviously there's sample variation, lens to lens, to be aware of. but so far, yeah, that's a nice 50.
Here's the reviews for that 28mm here on PF;
CPC Phase 2 MC Auto 28mm F/2.8 Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database
Short version: It looks good as well.
I'm going to go out on a limb and suggest that the 28-200 zoom is not very good. This is a wild assumption on my part and should be treated as such.
A Super Program in good working condition that doesn't need seals, an A 50 1.7, and a 3rd party 28 f2.8 that reviews well here, for $100 USD? You can sell that other stuff that you don't want for maybe $20 pretty easily I think (again, assumptions) here or elsewhere. So for $80, I think yeah, that's a pretty good deal. Others may chime in.
About shooting film, I'll echo what the others have already written here. I think it's good experience, you can't just "spray and pray" with film. It's costly and it's a hassle. I definitely spend more time framing the shot, and not taking shots that seemed okay until I saw them in the viewfinder, and realized that my composition just wasn't there enough to justify taking the picture. I got my first film negatives & scans back last night from shooting my first few rolls of film after a decade with digital... lazy focusing is not rewarded with this thing. I also need to learn about exposure, as many of the shots were under-exposed. But I really want to keep improving and I think film will help me do that.