I personally know some RVU students who said that boards are a big deal at the school and that they not only had one of the top two pass rates but also one of the top two average scores for all DO schools in the past 2 years. And they are pushed to take the USMLE as well. The school seems like it really has its stuff together. KCUMB also has its stuff together though so being honest it probably comes down to where you want to live. Both will probably set you up to do well on boards.