There are too many variables to give you a detailed answer, but te basic answer is "a qualified yes. What that means is "people are doing it". That does not mean you will be able to.... I did 18 months of research before selling the home and buying an RV. The nomad rabbit hole is deep indeed, let alone the RV one.
One guideline is "have at least $5,000 as an emergency fund" and I would add "the ability to replenish it".
An RV will, like a boat, present a string of things you will have to fix or otherwise repair. The larger the RV the bigger the bill for consumables.. gas, oil, tires... let alone repairs...
Simple is.. better, but is it a lifestyle that will make you happy?... can you live on the cheap? meds/health ins...??
If the RV you were to end up with were in good to very good shape, you may make it on $900, but it really means can you live on $700 and put $200 a month into the emergency fund? Insurance for RV? As a full-timer?
....
I decided to live in an RV. In order to not fail, I am not moving as much as I can get away with while still staying out of the heat. I will be spending a long time in an LTVA over this winter in order to finish the solar build and stuff away $$ into the emergency fund, as well as save up for tires and Ins... My SS is more than yours and that helps a lot, but I still need to watch the $$ closely.
Give the forum more info about the RV you would select and where you intend to live, and you will get more specific answers.
YMMV IANAL