I’d start by picking up the $100 50/1.8. Its a great lens, and would help fill your gap nicely. I’ve been making a point of shooting with that lens and not the zooms lately, and have been having alot of fun. I think you will miss the wide angle if you got rid of the 10-22. Other than that, the 28-135 IS actually isn’t that bad of a lens, and you can get them fairly reasonable.
I had debated that also. does the MK I metal mount shoot with the same sharpness as the mk ii?
I had debated the 17-55 but have reservations with the price for a non L build. but it has allegedly shot as sharp as the 24-70L