I now ride Bianchi Aria with 105 mechanical groupset and I want to upgrade my drivetrain and go to electronic shifting because I'm sick of messing with the cables every month or two. Still, I also think I wanna go for SRAM (force or probably RED if I'm not greedy) instead of Shimano for a couple of reasons: because I find the charging and true wireless system more convenient compared to obsolete wires and non-replaceable battery of Shimano.
I realize that I'm not only going to have to buy a new groupset, but I also going to have to change a few of my other components as well.
It's gonna be the bottom bracket to match an SRAM crankset and a rear hub to XDR.
And my first question is: Didn't I miss anything?
Second question: According to this official website and my own eyes, the bottom bracket is now “Shimano SM-BB72-41B”. Will I be able to install the SRAM crankset in that BB with the help of adapters?
Third question: Is it possible to upgrade it gradually? For example, install a crankset first and make it work with an 11-speed chain and cassette. And then probably spend another thousand or two for an SRAM upgrade kit?
And the fourth and the most important question: Am I overcomplicating things?