Get these Steve
https://www.cabinetparts.com/p/emtek-door-hardware-door-locks-EMT8502US10B-p88425?mtm_campaign=780262739&mtm_group=43589091591&mtm_source=google_ad&mtm_medium=cpc&gad=1
Hidden and clean. Cut a mortise and slip it in there. Use a drop of oil when you remember. One up top one on the bottom. Cheap, don't need to go fancy. I like Emtek, they make a good product. I suggest you get two 18" pre-hung doors and request they install these locks. I found pre-hung doors do not always have the best craftmanship they work at best. If you want to do it yourself, order two 18x80 doors and make your own jamb out of vertical grain Doug Fir. The one thing I strongly suggest buying or making a hinge jig to keep everything exact (three hinges,this is coming from a guy that's been doing finish carpentry since 19.
I like Emtek or Baldwin hinges but if you want to impress the Mrs, use ball bearing hinges. It is good stuff