etta, d1 recruiting is vastly more difficult. guys who romp d2/d3 - i mean who rattle off 2, 3, 4, 5 championships in no time flat - come to d1 and fall on their faces, because of the recruiting. plus, d1 has loads of coaches who could easily maintain A prestige type programs in lower divisions. its way harder, there is really no question among those who have succeeded at both (i put in that qualifier because a lot of people who never played d1 disagree...)
i personally think the top of d2/d3 are actually pretty tough, and get a bad wrap, the gap between them and top of d1 isn't as big as people make it out to be, IMO. but for say, a normal a to low a+ d2/d3 team, competing on that level (making the NT every year with an average of a NT win or two) isn't even close to as hard as d1. its so different that HDers talk about "best coaches" and "best d2/d3 coaches" because its almost impossible to compare coaches who made it in d1 with those who have not.
that said, i am curious, what is the potential of the guys you signed? i have no idea, i haven't even looked. i know you said you only have 4 players, which means you really should have been signing guys who are decent to fill spots, not holding out for greats... so just to make it clear, the quality of those guys doesn't really weigh in on the discussion of if there were other guys worth signing who you missed. on 30k, spending 10k on scouting is not unreasonable at all, to find more options, and even if you battled locally, you definitely should be able to win more freshman. but outside that, im kind of curious about the guys you got. i just checked them out, they actually look like they *could* be good, depending on their potential. and that juco sg can contribute right now, even if his potential sucks, the other guys, they need growth (like all freshman d2 recruits and most jucos), so i am reserving judgement.
edit: fyi, d1 also has pulldowns