I have a 3/4 inch copper water supply line that I want to transition to cpvc. The line currently ends as a stub that will be inaccessible if an transition is done there. Would it be better to extend the copper with a sweat joint and into an accessible location or can a transition safely be done at the stub. Also, would a transition with a compression fitting on the copper and a neoprene washer/female cpvc fitting glued to the cpvc pipe work in the inaccessible location. Thanks for the help!