Welcome to the Forum, Alan and Rose!
The tow bar folks gravitate towards the Sterling (which I use) and the Blue Ox, with some Demco salted in there. I am not well versed on the braking systems for gassers, since I use the air brake system from my diesel pusher, but Air Force One, which builds a gas version of the system I use, is obviously my favorite, but there are several reputable brake systems for your gasser.
Both of these topics are discussed regularly and with great vigor by their proponents and searching the posts in this thread as well as the Library should get you some good information.
I can be hooked up and ready to roll (or reverse that) with my SMI Air Force One brakes and the Sterling All Terrain tow bar in less than ten minutes and I don't have to do anything with my Honda but unlock the steering column and leave it in neutral. Many are towing like you are, gassers and Civics, and will add their experience as well.
Installation costs run the gamut, depending on how helpful you want to be, but we were installed, lit up, and braking for less than $2500. Some of that depends on which system you buy, whether you can find the bar and connecting pieces used, etc.
Others will add their experience, hopefully, addressing your specific coach and/or your Civic.
Kim