Not sure I follow you there mate... Do you mean that we should set it up with the same numbers as the real battle literally, or by ratio? (i'm guessing the later, as Bop is only 8 vs 8!).
I guess you could have 6 Heinkels and 2 109's vs 6 Hurri's and 2 spits, or something like that? Not sure if enough people would want to fly the Heinkels to get a match going though, unfortunately.
As for the lack of pits problem, I always find it hard to fly without the proper pit in sim mode, as I lose my bearings very easily, which is why I listed it as a disadvantage. The fact that the RAF would have the choice would probably give them the edge IMO.
And 110's are definitely in. I totally forgot they were in game (haven't unlocked it myself, as I've had sod all time to play the game lately

)
And good idea to host for different difficulties.. but for that, we need more volunteers.
Also, I'm planning on setting up the game tomorrow (Battle of Britain day in the UK). Can you make it Jareth?