Mmmm, SRAD, one of my most favourite bikes I ever had. Kept mine for 10-years and loved it.
FWIW, I appreciate you're on a trajectory, but the six-pots are very rebuildable.
Put the four-pots on and get riding, that's important. But for a nice fun therapeutic quiet-time job, the six-pots only require you to undo a couple of bolts to start stripping. The piston and seal bores corrode as they're not anodised or coated. The fluffy oxide pushes the seals onto the pistons and they jam up. If you're lucky, braking just gets bad. If you're unlucky, they drag a lot warping or distorting the disc too.
Rebuild kits are available from Wemoto, and as I say it's a fun job, just take your time and get everything spotlessly clean. Lots of cotton buds and dental pick action. Use red rubber grease on the seals. I think the Wemoto kit may actually come with it.
Once you've rebuilt, you can either pop them back on to go back-to-stock, or they're sought after on the aftermarket. Or at least they used to be. They bolt straight onto the 900/1200 Triumphs of the earlier 90's type (T300) and provide a useful improvement in braking for these heavy machines.