Hello Tina, My property is a 1/4 acre and I compost in a 6 x 6 foot pile. I build them out of 1/4" hardware mesh. (because of skunks, raccoons, voles, etc I use the wire fencing underneath and on top also. They don't seem attracted by the humanure - but food brings them in)
For outside cover i use leaf, grass clippings, and a few bales of straw. I also soak household paper towels and white paper mail in a 5 gal bucket (unshredded - I'm lazy). For aesthetics I always cover the paper with straw or leaves.
For inside bucket cover I have been using peat moss. Haven't been able to source good sawdust yet. Also I screened last years compost after a 6 month wait and am using that now.
I wouldn't use the plastic barrels or separate the urine. The compost breaks down best in contact with the soil (using a biofilter for absorbtion). There is a lot of info on Joe Jenkins humanure forums and good videos too.