As a professor in pharmacy practice you don't have to do research if you don't want to, you can do clinical work in the university hospital or something like that - a few people who graduated a couple years ahead of me are now doing just that. Some of my former professors would have an arrangement where they would be working at the VA clinic (or hospital?) half the time, and lecture half the time, they were paid half-and-half too (one of them was my advisor, that's why I know). Being a preceptor generally requires no obligation other than being willing to do it (and being willing to put in time with the student, of course). Most schools pay a little bit extra, too. I tried to figure out what the process is for becoming a preceptor in New Jersey - some states require a special preceptor certification, and some don't - it's complicated.
I am doing some teaching as a part of my fellowship (mainly to figure out whether it is something I would enjoy or not), and I am currently in doubt. On one hand, I like being in front of the class and teaching them something they didn't know before, and knowing that my words will affect their future patients. On the other hand, it takes A LOT of time to prepare (probably, it took me some 8 hours to prepare one 60-minute lecture and write 5 exam questions for it). It is also not very rewarding when you feel like you are talking to a wall, when students are looking down/sleeping/talking/not paying attention/not answering questions. I am still unsure whether it is something I would enjoy doing full-time. I don't think so, though I am open to continuing occasional lecturing in the future. I would like to precept, I think, but I don't have the opportunity this year, at least.