Another crew issue I found --- I don't see the need for 7 engineers. Well, aside from giving the ship a kick azz DCR that is. Technically two would suffice, replacing the other five with technicians and maintenance robots. After all, more often than not the engineer is coordinating the repair and work orders from a station, not actually getting his hands dirty per se (but a good leader jumps in anyways).

Here's what I might lay out for an estimated 30 man crew roster:

Officers
Captain and XO (high ranking/higher ship skills, either may fill in for pilot/astrogator/engineering)
2 pilots
2 astrogators
2 engineers
3-4 gunners (one for each system, the fourth being an optional cannon assist working with the pilot)
Administration Officer (aka Bosun)
10-13 officers
 
Enlisted positions
6-12 marines (lead by gunnery officers), some of which may also fill in for some of the following:
Chief medical officer plus possible assistant (with one or the other also specializing in Psyche)
5-6 technicians (one or two may operate the communications and detection systems if desired)
2 Computer Operators
Chief Roboticist
Steward
Cook
Chief Security Officer
Optional Environmental Officer (replaces one tech)
14-20 enlisted

Considering two 10 hour shifts, that works out well...and during emergencies all crew can be mustered for any job at hand (combat, post combat repairs, boarding, etc).

I like the CC and FE versions- nicely done there as well.