You have gotten lots of good advise so far. I do want to comment on a couple of subjects.
"On a side note, being overwhelmed by the possible problems that you can encounter when buying an RV I looked at RENTING an rv for 5 months, just to know if it's for us.
They want 25K for 5 months! (Canadream)"
That is steep but why not rent one for a long weekend or a week. That would give you some hands on experience. Riley it isn't as hard as some make out.
On the question of having a toad. Don't be without one.
I don't know what cars you have now but it would be a good time to start researching if you have one that can be towed 4 down. Remco makes towing accessories.
http://www.remcoindustries.com/Towing/
If they say it isn't towable I would keep looking. Using a tow dolly is another option but does add another level of complexity. https://cartowdolly.com/
I used one for a couple of years and would again if it was the only way to have a toad with me. You give up over 80% of what you can see and do with out a toad.
Gas today in Texas is $2.06 Diesel $2.29. I just got back from a 4400 mile trip to the North East and it was during the fake shortages from the hurricane. The most I paid was $2.88 on I-95 in Main, I would say the average was around $2.66.
Most of the time you aren't driving the coach every day and it doesn't use any fuel when it is sitting. I like to say I park my condo and take my toad and go explore. RV 8.5-9 MPG Toad 30+ MPG. Which one do you want to drive sight seeing?
I recommend you look hear so you can have a idea of what different coaches are selling for and to see different floor plans. https://www.pplmotorhomes.com/used-rvs-for-sale
I would get their free booklet on buying a Motorhome.
Later if you are interested I have a list of apps that are useful on the road.
Bill