Hello Flyertalk,

First-time poster here. I'm a frequent world traveler. My goal: get myself onto a program that will give me seat upgrades. I fly way too much, I'm too tall, and I really really want seat upgrades.

Here's my situation: I run my own business and we have millions of dollars in expenses. I could, if I wanted to, probably pay a lot of those expenses on a CC. I realized that this might be a big opportunity for me to boost myself into some excellent mileage category.

Here's the problem though: I don't have a million-dollar credit limit. More like a few thousand dollars. Can I do something like make a deposit payment on my CC, and then charge a very big amount ($300k or whatever) and get credit for that? Which CC should I go for?

I don't have a wonderful credit rating so I also am worried I'll have difficulty getting an affiliate card. However I can try; my rating is in the high 600s at this point, and going up.

Thanks!