Welcome to the forums and I hope you have great success in your new lifestyle.
When we first started camping, we started in the back of a pick-up truck bed with a shell and a 4 man pup tent. We slept in the back of the truck.
During that time, we learned a lot about camping and started acquiring camping gear, like Coleman cook stoves and lanterns. We learned how to pack tight, use totes to keep our camping stuff in, so we could just grab and go.
When we got our first pop-up, it took over a year to adjust our "camping life style" from tenting to "luxury!" Items we used for tent camping were all incorporated into the pop-up, even the tent that we used for extra space to put all our junk (and a port-a-potty).
When we got our first travel trailer we felt we'd arrived. But again, it took another good year of adjusting to it. Not everything from the pop-up days was a necessary camping article we needed any more. Things got put in, things got taken out.
The first, second, and third travel trailers went through the same rituals. Each one got bigger and you'd think everything from the old one would simply move into the new one. Not so. Each trailer took a good year to adjust to, slim down the amount of junk we were carrying and really learn how to use the new camper.
Our current fifth wheel was no exception. It took... well ... put it this way .... we've had it now 5 years and just this week I made a new "purge" of the kitchen cookware and dishes. For Christmas, my son and I are getting my wife a new Kitchen-aid mixer with several attachments for the fifth wheel. I need space to store it when traveling. So, stuff in, stuff out.
It seems, when we return home from our extended trips, I'm now always doing house purging, removing stuff and exchanging it for something better or different to to keep room so things are not cluttered.
I share all of this long history with you so you will NOT get discouraged and will NOT get overwhelmed attempting to outfit our new camper. If you have stuff in storage, plan on returning to that storage facility ever couple months and swapping items in-and-out of your new camper. You will find you really need stuff you forgot, and you've packed stuff you absolutely do not need, especially in an RV.
So, you do have an advantage, if you are close enough to access your storage. Just, be aware, it takes a good year, sometimes even longer, to adjust to simply "camping" in an RV, let alone living in one full time.
You can expect to be cramped, feel you need space, have no where to escape when tensions rise between you and your spouse, no place to hide secret birth day or Christmas gifts, and no privacy anywhere. (we all need a little privacy every now and then, just somewhere to be alone for a few minutes).
When RV living, you can always step outside and go for a nice walk and get your head screwed on straight again.
Keeping things picked-up, in order, and stowed away is a real challenge. RV's can feel claustrophobic REAL fast when things are not picked up. It takes (sometimes) years to get into a new rhythm that you don't have in a stick-n-brick home, and that is, putting EVERYTHING up as soon as you are done using it at THAT moment. Otherwise, stuff begins to pile up and then you feel claustrophobic and get cranky. Getting cranky with each other is no fun when there's no where to escape and cool down a little.
In other words, .... again .... it usually takes a year to adjust, adjust, and adjust your mind set, your life-style, your equipment, and even your eating habits. You don't have a year.... you have to do all of this starting on day 1.
Just be prepared for stress. I did not even mention the logistics of RV owenership. Those are the things everyone else is pointing out.
Good luck. You can do it ... JUST be prepared for some extreme life style mental changes (and challenges).
