I have a BCM ambi charging handle and the BAD lever on my AR. My left hand supports the rifle under the handguard and I don't lose that grip or have to drop the buttstock from my shoulder if I have to recharge or drop the bolt after a mag change.
Sounds like a great weekend, but I don't think I could pull it off this year. Do you think you might do this again next year? If so, put me on the "interested" list!