I'm not really an extract brewer, but I have dabbled a bit. Here are a few thoughts to ponder.
Assuming you are doing 5-gallon batch.
+ Biscuit & flaked oats need to be mashed, and do not have enough enzymes to do it on their own. Perhaps swap 1# of DME for 1# of 6-row pale malt. Keep all the grains at 150-152-F for 45 minutes.
So if i ended up doing this, would i need to sparge the grains after the 45? Would this be considered partial mash?
+ This beer will have plenty of body & residual sweetness using US-05... so perhaps you don't really need the flaked oats for body & mouthfeel??
I'm don't really have my heart set on adding the oat, just from reading styple descriptions and such i thought it might be a decent addition.
+ Are you boiling the whole batch to get down to the 5 gallons? Or are you boiling only half the volume & adding water afters? That will change your hop utilization. Beersmith has a full boil with those hops at 75 IBU (w/ the 1# Pale Malt swapped in for 1# of Amber)
I usually boil about 4.5 gallons, lose .5 during boil. So i do end up topping off with about a gallon or so after the boil.
+ Fermenting such a high OG beer has its challenges. You really want to aerate your wort well! If you have O2 with a diffusion stone, great! Otherwise, plan on lots of sloshing & frothing. Those yeasties will need a lot of O2 to replicate & grow in such a harsh enviornment. Stressed yeast will give off more off-flavors. So help them out anyway & everyway you can.
No diffusion stone at this point, but i am aware it needs to aerate very well and to be sure to pitch enough to avoid a stalled ferment.
+ Rehydrate your yeast, and use 3 packets. This is a big beer. Pitch at 75-80-F, and let things get kicking for a few hours. Then lower the beer temp to desired fermentation temp.
I was planning on pitching 3-4 packets, was leaning towards three.
+ Keep the fermentation in the proper temp range. If temps get over 70-F, you may start to get some off flavors, and with that much sugar... more & more of them. If you don't have ferm. chillers or controls, wrap the carboy in a wet towel, and keep in a cool place, etc.
Yeah, this is something i want to do a better job of. My last batch, i think the temperature fluctuated a bit too much during the ferment and it tasteds a little bit off. Not bad, but definitely a bit off.
+ I'd let it sit in primary for 3-4 weeks. It will take a while for everything to ferment out, and you will want extra time for the yeasties to clean up all the byproducts.
I'm planning on keeping in primary from anywhere from 4-6 weeks. Mostly so i can figure out what i want to do with it from there. I'm debating between buying a keg to drop into after primary, so that i won't be tempted to drink it all, while also then motivating myself to save up the money and get a kegerator built for next year. Or i'm just gonna bottle it in all 22s
Looking really tasty! Good luck!
--LexusChris