I'm new here & I've often used vacuum bleeding on albeit simpler systems than RR/LR.
I have a proprietary vacuum system but found it to be a pain in the ring.
The best has proved to be the simplest & cheapest:
A disposable 60ml syringe with a plastic tube on the end direct to the bleed nipple. OK, you need to close the nipple & "reload" occaisionally but you see exactly what's going on & can pull an almighty suck!
You can buy them @ pharmacies or vet supplies. You may need to explain what you're doing to prove your bona fides; ie it's not give yourself the Queen Mother of hits!

