Some things off the top of my head to consider -
Living IN your car vs. living OUT OF your car. Try to sketch out which you'll be doing most often. Because if you're only really returning to your car to sleep, then shade might not be all that essential, for example.
Another great blog is
http://guide2homelessness.blogspot.com/
For winter, the two methods I've used are parking in driveways with an extension cord to run a heater and whatever else, or no heater bu several sleeping bags and a set of thick thermals. If you have sufficiently warm clothing and bedding and you've educated yourself about hypothermia, you won't freeze. Worst case you'll be miserable, motivating you to improve your setup.
One thing I do want to mention is that there usually are startup costs to living out of a vehicle. If you're doing this to save money, understand that you might first need to spend money to reach that point, and try to get a handle on what you'd need to spend. If you'll ever be "stealth" parking in the city, for example, you'll at minimum need some pretty good tinting on your windows if you don't already. Then you either need curtains up if you want to use any sort of light in your car after dark, or you get to play blindman every night. The latter is doable, and you can purchase a headlight with a dim red beam that you can kinda sorta get away with...yes, you can survive that way, do you want to?
So, lots of factors to consider, and I know it's overwhelming but it gets easier once you get on the road. If you're renting now, I'd recommend beginning to set up your CRV for living out of, try spending a night or two in it, that'll give you a feel for what your priorities are and how doable it is for you.
Good luck!
