Just for future people who may stumble into here...as long as you're talking current gen stuff and you have the right hose (which OP does), yes.All shimano levers are compatible with all shimano calipers. They all work just fine.
Yes, keep the same hose just look for the Saint/Zee bolt, it's about 6 dollars per caliper. I did the same but put Zee calipers on. The Shimano bolt from the tech docs is Y8H098010; the link to the PDF can be found here:Got a similar question here, hoping the wizards here can answer:
I have m785 calipers, which take the Shimano banjo fitting, and I'd like to swap the caliper for an m8020. I understand that the hose kit is different for each of these, and I'm guessing that the difference isn't the hose, but the banjo bolt. Wondering if I can get away with just swapping the caliper, or if the actual banjo hose fitting is different and will thus require a new hose.