I think as long as you are a person who doesn't mind keeping things picked up, and you have the dedication to keep her occupied/supervised when you are home, I think you'll be fine. The biggest adjustment for me was just having to CONSTANTLY watch her…when we visit others' houses people think I am nuts cause I am constantly worried about where she is/what she is doing, but I have to be. If I don't she will get into trouble and either hurt herself/belongings of others, or both This can get VERY annoying at times, but other than that I love owning a basenji.
I think 750 a year is more than enough...again, provided you have no disasters/unforseen circumstances.
As for finding one that is crate trained, the person/organization you are getting your basenji from should be able to tell you if yours is, I did no crate training, she already came that way so I don't have much advice there...I would just take your time, not get the first one you find available, but look for one that has the mood/temperment/quality you are looking for. Some are loud, some are quiet, some are destructive, some are not...you get the picture. Think of what is important to you, and find a basenji that has those things.
As for spending time with one, that seems like a great idea! Look for owners/breeders in your area and try to make a visit. I don't know what part of Michigan you are in, but if you are in the UP, I am in eastern WI (hr south of Green Bay) and if you'd ever be in the area you'd always be welcome to visit...unlikely you are in my area, but just thought I'd throw it out there.
Good luck, let us know how it turns out!