Long redshirted at Iowa State during the 2008-2009 season (so he graduated HS in 2008) which by my quick count made him 84 pounds following his freshman season, heading into his SO year of HS (05 as a FR, 06 as a SO, 07 as a JR, 08 as a SR, 08-09 @ ISU). Clark graduated in 2012 I believe so he would have been a freshman as well I believe.
Long was small as a FR, but I think he wrestled 112 for his high school season, then cut to 105 for Fargo.
As for Cullan, I think he cuts a little to get to 88, but not a lot. He won AAU state at 90 pounds and wrestled some at 94 (weighed in a full pound under at Northern Plains) this summer. I couldn't tell you his exact weight, but I don' think he is more than 95 pounds.
Andrew got 8th at 103 as a freshman. He weighed about 80 lbs.