You have to apply to CMS through AMCAS like you would any other school, regardless of your attendance in the BMS program or not. So that would only be a question of whether you could apply to CMS with a 2014 MCAT.
RFU's webpage for the MD program states:
MCAT
- 2016: We prefer MCAT2015 but will accept both
- 2017: We prefer MCAT2015 but will accept both
- 2018: We will only accept MCAT2015
- Additional details: MCAT Scores are good for 3 years prior to the year of matriculation.
- If multiple exams are taken, the most recent score is considered.
- More information is available at www.aamc.org
So I assume that means you're okay? I'm not sure if there's a monthly cutoff or not. Like if they'll only accept MCAT scores from the fall of 2014, but not earlier since that's outside of the 3-year matriculation gap. That's a question I'd call the admissions office to ask about -- they'll be able to give you the most definitive answer.
The cutoff varies by school, so it's something to be aware of. If you're planning on applying to more schools than just CMS anyway, I would check the MSAR pages and if there are schools you're out of range for, I'd suggest retaking it. I know that sounds terrible but it's better that than spending all of the money on the BMS program and applying to schools to then be disqualified by your MCAT date.. Overall, best option is to call each school individually if it's not listed on their MSAR pages (CMS's criteria isn't) and make sure yours is okay. Looks like most MSAR pages are listing a cutoff of 1/1/2014 as the oldest accepted this year, but, again, best to verify per school.