www.escapees.com is source you should check into. There are many considerations when thinking of going full time including tax status. We full timed for 5 years, and I recommend you investigate the advantages of being the resident of different states. Our choice was South Dakota as we got mail forwarding service as well as state residency easily. Escapees offers a wide range of services for full time RVers and is based in Texas.
Setting up automatic bill pay worked for us for most of our bills. We didn't have credit card payments, but if you did, I think any online banking system could handle that. We camped in remote locations a lot, so Internet access was an issue and was solved with a rather pricey satellite system. Things are changing, and you might have good success with a wi-fi enabled computer for your needs.
Full timing isn't for everyone, but we loved it! We volunteered with the US Forest Service and Bureau of Land Management. We worked at a fishing lodge in the Sierra Nevada mountains, and traveled to and from Alaska on the ALCAN Highway. It's a great way of life, but the costs are higher than most people think. Vehicle maintenance for travelers can get expensive. RVs typically were not meant to be lived in full time, and adding much moving around like we did will beat up a vehicle. My philosophy was it's a truck first, and a house second as we heading into back country locations. I had to keep after loose screws and nuts and bolts all the time.
Campground resource website can offer some ideas on where to stay you may not have thought of. You might try
www.rv-camping.org as it has a lot of info about finding different places to stay.
Hope this helps.