The 10 teams I listed, including Rutgers at 1-7, have a combined record on the season of 8-67, so yes, even Vandy could handle them all. The fact that yopu thought Rutgers to be scary shows you either haven't followed them this season at all and think usually mid tier teams are scary, or that you think a 1-7 team is scary, either case is bad.
UNC is mid tier in it's best seasons, so they still aren't a big game. UCF has not made much if any petition for joining the SEC, they've tried the ACC, so I'll give you that, but let's keep our facts straight here.
The real issue is that UCF's current conference schedule is so pitiful that it just doesn't hold weight in moving it up. The reason they would need better OOC games is to balance the weak in conference games. If they played in a different conference where they have to face top 25, top 15, top 10 teams 2-4 times every year, then sure, have some weak or mid tier OOC games, but that just isn't the case. Yes, I understand teams have cancelled games, but keep pushing for more of those games, and don't try justifying your schedule as being strong when it clearly is very weak.