oh yeah...I'd advise getting the biggest that you can get.
that will still park in a normal parking space.
stealth camping comes to mind.

There's been MANY a night that I wanted to STOP. I was tired. I NEEDED to sleep.
Couldn't.

No place to park (my rig was 70ft long)

If you have a 'van conversion'...no PROBLEM.
Pull into a walmart...and take a nap.