i think it's most recent 4 seasons, with heavier weight given to most recent seasons. conference doesn't matter, but does determine bowl money. coaching grades matter, but the amount is debatable... i don't consider it. coaching history doesn't matter beyond the recent school seasons.
personally, it IA, i usually just look to see if a team has recent success and how many scholarships they have open to get an idea of their budget. if you're with same team after few seasons you'll get a feel for how coaches around you recruit.
at unlv, you're probably best to go pretty conservative early. once the dust settles, you can look around within 1500 miles and find recruits considering simai cheaper than battling a human for a local.
also, check your school history, season 22 15-0 ROSE BOWL CHAMPIONS... REBELS CO-NATIONAL CHAMPIONS!!!