The last MLD had 16 teams and it took 11 weeks to complete (first draft pick to winner being announced) despite the playoffs - the finals, really - going rather slowly. It was actually just 10 weeks before the voting period in the finals ended, and 8 weeks before the finals opened. So the draft really took 8 weeks. optimistically, a 12-13-team draft should get completed in 6 weeks, which, if this started tomorrow, would be August 16th.
VR, is that too late for you? it's not too late for me. Even if it does cut into my UK trip, I'll still be able to participate/manage the last few rounds of the playoffs in a worst case scenario.
On the other hand, majority rules and if people want to wait, we can wait. I don't think there is a loud clamoring for that, though.