My partner has a Kona Rove ST which has a SRAM Rival 1 on it and it's a great groupset. Can wholeheartedly recommend it in a 1x setup, makes for a great gravel grinder, plenty of gear inches and a pile of fun to ride.
TBS Bike Parts is a Canadian company that should have all the parts for SRAM groupsets that you would need:
https://www.tbsbikeparts.com/bike-pa...oupset-builder
I'm also currently building a 1x Shimano system for a bikepacking rig. This is using the XT MTB groupset however, not a road groupset.