You can do it but full-timing without a car could be very uncomfortable and difficult at times. I think of the many days of bad weather we had over the years - cold, rain, heat, hail - that depending on a cycle to get around would not be fun - for us, anyway. Also, we love to sitesee the boonies - gravel roads. Our Jeep gave us endless fun. Think it out carefully if you want them as your sole means of transportation.
A toy hauler would be more practical. You'd have covered storage for your cycles and the truck to drive around, if needed. Think of grocery shopping, doing laundry, perhaps a medical issue. Do you have a car with your home now? Could you do everything with only the cycles?