Does the BB have the recommended axle length for the new crankset?

Indiscriminately shortening your chain could cause the RD to end up in the spokes of the rear wheel, and you in the Emergency Room at the local hospital. Set the chain using one of the suggested methods, I use big-big plus 1 or 1½" so as to not use a half link. Park Tool's website has a good description. https://www.parktool.com/blog/repair...-length-sizing