if you had an offensive star or two on the returning team, i would say you might want to try to make something of the season. but as is, i just consider this one a throw-away. cant go lower than d3 c- anyway, and prestige is so fluid, its like, you arent really messing much up.
i would try to balance classes out somewhat though, especially if you have a longer term plan here. if you just want to leave ASAP then maybe ignore this part. but i would probably try to sign like 5 freshman, a complete well-structured starting lineup, and then id either take 3 walkons or get some jucos if they are quality. i would NOT take a low quality guy to fill any spot over 4. you really need to try to fill at least 4 but i think as long as you get 4 good players, you are fine, and 5 good players would be great. to me the most important thing is to remember that this season is junk anyway, and even without that, a walkon hurts you for 1 season (and not that badly), while a crap scholarship player screws you for 4.