I think a 1x for commuting is great. Since you have it setup, how much more of a chainline do you need?
Will 4mm do the trick?
You are talking about less than 1mm difference between your options. Maybe an additional 1mm spacer might work.
Personally, I think you should look at chainring options also for whatever crank you get. I assume you will eventually consider a narrow-wide. How does that play out?
For a 1x there are no compatibility issues to RD, other than a really bad chainline.
John