Hey Ravi, congrats on the 5000!
As you are familiar with MD shops, I was wondering if you had visited any of these: Race Pace, Hybrid Pedals, Bob's Bikes in Poolesville, or Electricity Bikes? As I am a bike newbie, I would like to deal with a good, honest shop that won't try and pull fast ones on me.
Thanks for any help!
Changing to XTR Di2 would require some changes in regards the cabling. Unless you're in a very hilly terrain and shift quite a lot, I don't think you will notice any difference. It's quite expensive too.