After taking a look at this outfitter I feel I can give some moderate advice. The pictures from their web page look great, some very great animals. It appears that a majority of their hunting is done on CWMU property and you can check out the CWMU's here: http://wildlife.utah.gov/maps/public/list_cwmus.php
When I look at these tables I pay close attention to the average age of the animals harvested to get a feel for the potential size. I just used the contact names from R&K's web page and cross referenced them over to the CWMU operator names found on the provided link. I have hunted one of the CWMU units for elk and from that experience I found that deer were a better hunt. When you draw a public tag on the CWMU's they are often trying to get you to hire a guide, since it is the only way for them to make real money on the hunt, so they were always braggin' up the big animals that the properties hold. The CWMU operators keep the public hunters in confined hunting areas and there will be a lot more area for you to tap into. I saw plenty of deer on my elk hunt I would expect that you will see plenty of animals and if you can get to some of the less traveled parts you should have a great chance at nice sized animals. Operators were claiming to have easy access to large 200'' + deer but as we all know finding that size deer might not be that easy or realistic. Good look to you, R&K looks like they will treat you well while staying with them.