I have traveled with my horses for over 20 years. As you can imagine, I have learned a few things that might help you out. We started with a tent and 2 horses at the state park. That lasted all of 6 months. Still though, we were hooked. Waking up with trails to discover and good friends and good horses was a dream come true. We packed our saddlebags and headed out. God must have been watching out for us because we spent most of the time lost and very cold. Didn't think it would get that cold as the sun sunk low in northern Michigan! Luckily, we managed to get back to camp as it was getting quite dark.
So here we are now veterans of the horse camping world, older and wiser. We now have a 32 foot motor home and a wonderful Featherlite 2 horse bumper pull with a large dressing area. My husband is a big guy and comparing the room offered by the living quarters horse trailer and the motor home didn't compare. Also the price tag on the used motor home with a new Featherlite was far less than that plus the cost of a big truck to pull that big trailer.
We joined a great riding group, the MTRA (Michigan Trail Riders Association] and we learned from veterans of this group. Mind you, I had 40 years of experience with horses, yet I learned so much. There are basic things that you will need to start with. You need a rig and a good horse, a picket line with tree savers, hay and a way to haul it, a water barrel, hay nets, feed bags , horse blankets, fly spray, water buckets and a horse first aid kit. Of course you will need your tack and more than one saddle pad so you are not putting a wet pad on your horse. You want extra halter, lead rope, and backup bridle and fly mask in the hotter months. You will also need some type of saddle bags or horn bag to carry what you will need while riding.
So you are ready to go! I suggest joining a group that can help you become familiar with the ins ands outs of horse camping. The MTRA has maps they send when you join. We ride over 500 miles of trails in lower northern Michigan. The group has 5 organized rides per year. The ride is called the shore to shore trail. It starts at Lake Huron and ends at Lake Michigan or vice versa. The trails are spectacular! Riding with a group also offers a safety net for mishaps for horse or rider. The MTRA has been active for over 50yrs. I really appreciated them when on a ride last year I decided I knew a short cut off the very well marked trail and got lost. Well they found me.
So good luck. I know once you try this you won't want to do anything else!