Reputation and Loyalty mean nothing when it comes to recruiting (although I've always wished it did). Considering this is D1, I'd assume about a 30-40% for the C+ school. I know some will give a lot higher number, but the lower you go down the prestige scale the smaller the edge is, which is why at D2 and D1 prestige is nearly irrelevant in battles. 

You can if you have some advantages to overcome the Prestige disadvantage.  If you have an extra scholarship, or you've tracked his recruiting and he's gotten beat up in a battle or two, or you have a significant distance advantage, then it's green light.  However, you probably should prepare a backup plan if you've misjudged.

kmason must mean D2 & D3.  As long as a recruit is already accepting visits, then prestige makes very little difference at lower levels.  If you have to spend a bunch of money pulling the recruit down first, then that is easy to attribute to a prestige advantage, but it's more likely just that you're forced to spend your funds a little less efficiently early on.