Hi Jay
Check out the lens database and you will get some info on how your lenses are rated. Pentax must be good!
Seriously though, the A 400 is well regarded (most of the "A" lenses are). But the lens I find most intriguing is that Elicar 90/2.5. It is listed in the database and it should be good (there were medical/dental versions of it) but the fact that it goes beyond 1:1 magnification without any attachments was what made me sit up. You have a very interesting lens there, and for macro manual focus is not really a handicap.
Peter