New Cold IPA - JPalmer inspired

Local homebrew store was low on supplies, so unable to get SF Lager as I've used before. Winging it with WLP840, hoping for both a good attenuation and minimal/pleasant ester profile with good temp control...

Reviewed (this and a few other sites, but with others not specific enough for guidance) just before brewing for some style guidance:
https://www.beerandbrewer.com/john-palmers-cold-ipa-all-grain-recipe/

Decided to use grain bag (in grain basket) at Palmer's mention of bag. Would not recommend doing both, didn't seem to facilitate cleanup like I'd hoped and may have contributed to splashing (though large mash volume was certainly a problem too). Oh well.

I mash for 3-4 hours, without worrying/watching an exact time. A brew day works into my schedule better that way - set up and start the mash, go about our day, and return to finish with the lauter and boil in the afternoon/evening.

It was a larger mash volume than I typically calculate: I took 26L directly from Palmer's blog. For his recipe (5 kg=11 lb total), that volume works to 2.5 qts/lb, whereas mine (13 lb not including rice hulls) is a slightly more modest 2.1 qts/lb. Doesn't look to have improved or dropped efficiency overall... All my previous batches have seemed to have the same efficiency (thicker mash, harder to stir at times) with 1.25-1.5 qt/lb water (as per the old version of How to Brew).