Sounds like a plan!! Hope you get to meet Layla soon!!
With DS2, I drank it at 6pm... BM's didn't start til about midnight (6 hours)... was cleaned out in an hour or so... but it contractions kept coming.. so I just thought I had more to "go"... The solid contractions started around 2am (8 hours after drink)... and stayed consistant. Got to hospital around 5 am and really needed to push.. and had August in my arms by 5:15am...
So, from drink to baby, I'd say about 12 hours. That is so awesome you have your RN grammy there... Has she ever checked your dilation?