Brewed this today using a Robobrew.
Changes:
I added 5g Northdown and 5g of Goldings @ 25 minutes.
Using Safale S04 yeast (rehydrated for ~2 hours, added chilled wort about 45 minutes before pitching)
I ended up with ~23L post boil and had an OG of 1066! (Did I get some crazy efficiency or did...