Also i need a short mono extention.
Thanks for the help

Every tire has a little different profile, and can vary from the stated width. I'm not familiar with that tire at all, so can't say for sure. I once ran some FMB Paris-Roubaix 27c tires on an sc and it was an extremely close fit to the seattube cutout...no way I could've run those in the rain for example because the road grit they'd have picked up would've filled that gap.

At 26c I'd expect you should be better off than that, but there's no way to tell without putting them in there. At 25c (or a 26c that actually measures closer to 25) I'd say you shouldn't have a problem.

Thank you to everyone! It's a little daunting, my lbs really struggled with the brake hood and stem cover (they broke the stem cover getting it off, I had to replace it, and said to expect them to break the brake cover). I've also never disconnected my Di2 wires before, but leaving them attached is scary as well. For that matter, I haven't removed my der hanger or the fin before. But I've got a month to figure it out. :-)