Hi there! There are a couple threads on this in the A Frame subforums. You'll also find specific advice, ideas modifications to your style trailer.
I use a portable privacy room. I started with the Trekker brand (from Cabelas) but didnt like how it folding down to put away so I boight the privacy tent made by Cleanwaste (Cleanwaste | World's leader in personal human waste management
) Its all one piece and easily folds down as well as easy to set up.
There are many brands of portable privacy shower/toilet rooms on the market. Forum member (Farfromstock) has a very nice shower room and a glowing report on its recent use which was shared under the thread "Raptor Run" in the A Frame sub forim.
Congrats on your new purchase. Heres to many enjoyable trips in it over the years!
2012 FR Flagstaff T12SDTH
1996 Shadowcruiser Pop Up Truck Camper
1967 Newell Motorcoach
2003 Ford F150 5.4 V8 Triton Super Cab
2004 Nissan Titan LE 5.6 V8 4x4 Crew Cab