Good Choice, lots of goodies available for it as well. Am all to familiar with the 'that's the one but haven't got it yet' stage of the acquisition process.
It's a good choice. Have you considered the flat-top version? You can put optics on a rail much easier than on the carry handle. A free float handguard with rails is also handy, as is a fold-down front sight. Of course, all of this adds cost, but also adds flexibility.