Swingline is better on Bullseye because he can take advantage of both all of the effects.
I dont necessarily agree with that. Id try to put Swingline on both, but Quicksilver needs it worse. Bullseye could use it for RS, but he still has range to back him up. Even if he uses RS for 2, he still has a mammoth 10 range or something (I dont have V Bullseye). Quicksilver thrives on getting into close combat and smashing someone, and then running to safety. Therefore, Id keep it on him.
As for your team, it looks pretty good. Only problem is mobility. No fliers at all. Id consider taking out the V Super-Ape, simply because you can't make good use of his Wild card TA (you COULD park him beside Mr.Mind and get Outwit, but I have a better idea). Instead, throw on R Songbird from FF. That will run you 6 points less, since she's 44 pts. Throw Thunder Bolts on her and Quicksilver, which will run you 10 pts. Since your at 296 currently, 6 less for R Songbird is 290, plus 10 (T-Bolts) will run you exactly 300. This way you can pick any TA you want to, plus have a flier to add mobility on your team. And, she fills the spot of the V Super-Ape because she can TK too