thik i might go for something like Fulers london Pride:-
3600 grams pale malt
306 grams flaked maize ( cornflakes)
130 crystal malt
1.5 tsp brewers caramel for colour
90 minute boil.
11 grams target
11 grams Challenger
10 grams Northdown
10 grams northdown for 15 minutes alonfg with 15 g Irish moss.
11.5 liters mash water, continuaous sparge
Would suggest Wyeast 1068 ESB which is almost identical to the one fullers use.
Gives an ABV og around the 4.1 mark and is a very smooth drinkable pint.