I love making characters. Even though I'm only in one campaign I have a whole host of character sheets just waiting to be played and the hardest part of DnD for me is only be able to play one character. So I had the idea that I could play 4 different characters in a 1 on 1 campaign with a DM. Naturally, I hit up my friend who DM's for the campaign I am currently in, and asked him what he thought of that idea. He said that nobody would DM for that and it doesn't sound very fun. I have a few questions regarding this:

* Is it at all realistic for me to play 4 characters at once?
* Can I expect to be able to find a DM willing to do this for me?
* I believe it will be fun, but is this indicative of a part of DnD I enjoy most, that might translate better into another activity?