So we did not get as far as I would have liked on the conversion over my vacation. One of the biggest things we have to contend with is the actual frame of the trailer.
We putting the grey and black tank inside the trailer and going to build a platform that that the shower and toilet sit on top of them. One challenge has been the discharge, how do we hook it up. The drain pipes were not going to be in the right place, so we had to move the tanks around a bit.
Now the issue is we either need to combine the waste discharges together in a manner so that the do not hang low enough that it will not hit anything on some of the roads we want to take it on.
I am leaning towards two connectors one on each tank.