Hi guys I just wanted to run some things by you before i order incompatible parts. I plan on running an 11-28 cassette with a standard 53-39 crank. I was also planning on using a short cage derailleur. The max chain wrap I've seen for a Shimano 6800 ss is 33 so if my math is right (53-39) + (11-28) = 31 this setup should work. Please let me know if im wrong on that. I was also planning on using all Shimano 6800 shifting with a Sram Force 22 crankset. Does anyone have any experience with this combo? Thanks for the help!