As mentioned, don't do anything right now!!
From your info, living in CA and having an Aliner as your RV, full-timing isn't a good idea.
The rough idea would be summers in Idaho, and winters in California. Are your kids in CA located near where you could stay cheaply in a bigger RV? Are you kids in ID close to good campgrounds?
Are you sure you want to spend that much time focused on your kids/ grands?
Friends you would leave behind? A church or other social group?
Now, just saying, traveling alone, I would recommend a Class C or motorhome with a towed vehicle.
I pull at near 40' TT, for almost 7 years full-time. Parking without the DW would be a nightmare some places. And almost everyone trying to help a person park uses different signals. And they do not know how my rig turns, when to tell me to straighten out. My rig is 17 feet between the rear axle and the carrier for the sewer tote rack end.
What is that going to do to your budget, getting such a rig?
In general the only part of expenses I find cheaper in the TT than our last home is utilities, and taxes. We still eat the same way, we spend a little more on fuel traveling because we go see more stuff than we did in the house. Maintenance costs are close to the same.
We spend less on clothes and 'junk' no place to put it.
And I must do more of the routine maintenance that I did on the house. Well, I have almost 60,000 miles on the 7 year old TT, through 46 states.