I haven't heard it from KP yet, but they have the most potential. I've tried getting into MB, and I couldn't. Their new record bored me. I saw someone mention them touring with Microwave, TMP, and letlive., which is awesome, a bunch of variation there. This lineup just doesn't do anything for me. I feel like Turnover could've done really well with them as well, but they might be purposefully staying away from the pop punk lineups.
Really fucking love Blush, so I am stoked to see MB. Love TWY, new Real Friends didn't win me over like their previous album, but i'd be happy to see them live. Never listened to Knuckle Puck- really like their name though. Saw TWY last year in Philly the night before thanksgiving. Will be very happy to do that again this year.
it gets played as often as The Greatest Generation ... those are the two records that i'll put on most when i wanna listen to TWY. Suburbia too sometimes, but not as often, and i almost never listen to Upsides. i don't like it as much as TGG but it's a solid part of their discog for me.
based on what you might normally get out of a pop-punk bill like this... 25-30m seaway 25-30m moose blood 30-35m knuckle puck 40-45m real friends 1h15m-ish wonder years my guess is there'll be quick change-overs between all of the first four bands and you've got about a 4-hour show there.