I agree that the 25K seats are getting much harder to get. The trick is to be flexible with your dates - book as early as possible (331 days out), and if at all possible, try to go some time other than peak season. We also use the Delta Am Ex Skymiles card and find it a great way to rack up points. My husband uses that as his business credit card - so lots of points gained there since he travels a lot, and we also use it for big ticket home items. In a few years, I'm sure we'll be using it for the kids' college tuition
You can most definitely get your ticket as well as any one else's that you have enough miles for. We've used them for friends and family even when neither one of us was going on the trip.