Another consideration comes to mind. When I got the first tank, I just barely got it into the back seat of the taxi. If a different car had come my way, I might have been messed and left having to figure out how to call a truck.
So what I think I need to deal with is a tank that I know I can get home. Either that or a friend with a car that can do the deal. I am not sure what is possible in that regard. I know one guy who might be able to do the job but I have not heard from him in a couple of months.
For that deal to work, I think that I need him to commit before I order the tank. Then I need the store to be willing to have a tank on hold until I can get him to do the job. That would get me to a tank which I can physically inspect before writing a check.