Haven’t done one of these for a while, Here is a small etude that starts on 3 string arpeggios. It puts focus on making them “sound” correct. I picked a tempo of 110bpm because it’s fast enough to keep you working to get them to flow into each other, but reasonable enough to get the timing and sound. Actually bumping it down in tempo isn’t a bad idea. It can repeat on and on and on.
I actually recorded it for real this time, no phone, so if it needs to be louder, I’ll normalize it and repost… and I think I stole the progression from Paul Gilbert after listening (but changed enough to make it sweep friendly).