I like ! Two thumbs up !!
There might be other (better ?) options than the RS700 11 spd shifters - but I'm not aware of them.
Questions:
Why did you go with the GRX calipers ? ( instead of XT or 105 or Ultegra or whatever ?)
What brake lines were installed from the factory ? Did you change the brake lines ? And if so did you go with Shimano BH59 or BH90 lines ?
Thanks !