Making the change to disc isn't a big deal. I did it about 18 months ago with no regrets. I chose sram force axs. I took the same force axs levers that I was using on two rim brake bikes and moved them over to disc frames with Juin-Tech GT calipers. I'm planning a new disc bike with force axs and full hydro. Bleeding brake hoses with DOT 5.1 fluid in them probably won't be fun. Cable operated calipers are much easier to maintain. The number of rim brake frames being made is dwindling quickly.