Mileage run TO LAS - Starting earlier this year

So, just missed gold last year and couldn't squeeze in a MR around actual work at the end of the year. I am taking some of the advice around here and trying to maximize throughout the year instead this year.

I have to be in Vegas for work on Mar22. My Home base is CLT. I fly US but the new US/AA has opened up some more opportunities it seems. The cheapest flight for me was on AA with a stop at DFW. This got me thinking about adding to the trip to maximize miles/segments. I would like to return home "normally"

1. No. of miles/segments that you have at present. - n/a for now
2. How many more miles/segments will it take to reach your goal. maximizing for now to prevent scramble at EOY
3. Where are you are based. CLT
4. Whether or not there is some place specific that you would really like to go. Have to end up in LAS
5. Dates you are available to travel are must a must - in both directions, please! Can fly all day on Mar 22 (need to be there by late that night) and return Mar 27
6. Also, it would help if you mentioned the budget, please! $500ish

Thanks!