Newbie here, 1st post, slowly losing my Aero Belly but keeping my Grey Beard.
I have adapted a Catrike Villager for off road use here in the Arizona desert SW. I built a set of 19" modified trials rims with Maxxis Creepy Crawler tires, (20" X 2.5") and run them at 20 PSI. Front chainrings are 18t-30t-42t and rear cassette is 12t-36t. This gives me 9 gear inches which is all I need for soft sand, crawling over volcanic rock and climbing.
The Villager with it's high clearance, turned out to be an excellent choice for off road in my conditions. The only problem (and it's inherent with all tadpoles, I think) is off camber approaches, I've rolled a number of times. Picking cactus spines out of my thighs and shoulders is a normal time out on the trail.
Hope you enjoy your Cat.