I'll be up for a catch up, are you on your own or have family with you?
As far as entering the channel I like to plan a bridge opening 2 to 3 hours after the high tide, in or out.
With your draft you'll need a good tide. There's some good tides at the beginning of December or maybe 19th - 22nd Dec will be enough!!
I haven't been out in a while so I can't comment on the channel - I would give Marine Rescue LM a ring/email for the latest but it hasn't been dredged so it won't be good.
The only real problem spot is the "dog leg" which builds up. Pic taken 19th Oct this year