Dating previous owner's disc conversion

Yup, the calipers hit the sway bar. Definitely going to do the switch.
Is there anything rubber besides dust boots and brake hoses I'm going to need to swap the spindles?

Can I just disconnect the brake hose from the caliper and pull the entire array, hub and all, and switch from one side to the other so as not to have to change hose length. Anything I should watch out for? Or... Should the brake hoses be replaced as a matter of course?

The real mess you have is that thing underneath the MC, I don't like that at all.
Finally took a good hard look at the thing under the MC - it appears to be a proportioning valve!