Originally posted by lsurb Are the ones I listed good for what I need? Im a college student trying to make some extra money without getting a full time job that interferes with training and my classes.
I'd recommend paying attention to the lens reviews on this site - you get a pretty good idea of which lenses are good, and which are not so good.
With any luck, the camera you buy will include an 18-55mm zoom lens. That lens is good enough for general photography (but it's not the greatest lens out there - If for example you managed to snag an 18-135 with your camera - then that would probably be good enough to use as your only lens for the next few years)
As mentioned, in the telephoto zoom range, the best price/performance will be found with the DA 55-300 (You may be able to find the DAL version on ebay, which has a plastic mount and lacks quick shift & weather sealing). There older F and FA series zooms in that range that may suffice, but I think most people would advise you to save for a little bit longer to get that lens (second hand on ebay, or on the market place here). Just remember this adage: quality not quantity!
The DAL 50-200 is OK, and you'd probably find it available cheaper than the 55-300 (simply because the 55-300 is more highly regarded around these parts!). It's not a bad lens to start off with, but the 55-300 is a little sharper, and has a bit more reach.
There are older F and FA zooms that may suffice for your needs. Before you spend any money though, be sure to check out the lens reviews:
Pentax Lenses - Pentax Lens Reviews & Lens Database
The silver 80-200mm FA lens you linked to above, doesn't really have a good reputation around here.
---------- Post added 05-21-16 at 12:33 AM ----------
Another slightly daft idea: Are there are used K-7's or K-30's available for less than the K-50? The K-30 is basically identical to the K-50. The K-7 is a little older (build quality is better, but the high ISO performance isn't as good, and it's 14mp rather than 16mp). If that were to free up some more cash to spend on lenses, that might be worth considering....