I think, for me, considering the two big jeep events, and the fact that I have a local socal trip planned ealier in the month of July that the 15th-24th timeframe is probably what I'd prefer.
I'll put it out there that my first choices would be the 17th -18th-19th (Wed-Thurs-Friday) or the 21st-22nd -23rd (Sun/Mon/Tues) with not much preference between the two, at this point? I like the idea of lower traffic during the week, but also, less vacation days needed during the weekend, since I have to plan a travel day to/from So-cal, so that's 6 of one/half dozen of the other right now, for me personally.