I'd rack directly onto the existing yeast cake (at the appropriate temperature) and swirl it into suspension. No washing or dividing. Bigger yeast count is generally better, not detrimental.
Excellent, thanks. So essentially, I'm just mashing thicker than I normally would with a full volume/no-sparge process and using the remaining water for sparge?
I finally got my system all put together and am taking a fellow member's spot at the local Big Brew Day event tomorrow. I'm using the ingredients provided by the event sponsor (below).
Style:
IPA
Batch Size (gallons): 12
Malt
Pilsner - 10lbs
Crystal 70-80L - 2lbs
Vienna - 20lbs...
Any chance you inadvertently ordered/received a BIAB kit? I read somewhere that many of these kits are for 3 gal batches, which would have a significantly smaller grain bill, resulting in lower efficiency with water(sap) volumes for 5 gal. Just a thought.