Why do you want to do your mba now? If it is only because the company is paying, I do not suggest going there.
You are young, don't have management experience, and I think a part time mba is a waste of time for you *right now*
You only get one chance at an mba, don't do it for the sake of doing it now. Wait, study for your gmat, and do it when the time is right. The biggest benefit to the degree is the first job right afterwards. If you pursue this part time program and don't get a promotion (a large one) at your company which you are likely obligated to stay at, it is almost all for naught.
I don't want to be harsh, but it a lot of time and money that you'd be putting on the line. Make sure you are doing it for the right reasons
If you absolutely insist on applying, just do it. There isn't really anything you can do besides improving your gmat in this time frame. Part time programs take almost all applicants as long as their application makes sense
edit. Ivey is relatively close to you. kill it at the sales job, get another 100-120 points on your gmat, and you are a solid candidate there, at a much better school. Even though it is full time, I think this will hold a lot more value to your career than going to a part time program without years of management experience