If you think about it, Chelsea have created the perfect blueprint of how to play Arsenal at home by beating them 6-0 a couple of weeks ago.
If you think of their starting eleven and what we have at our disposal, I'd try to go like-for-like in terms of personnel as much as possible.
Then replicate the tactics; i.e. 4-2-3-1 as we usually play, but with pressing high up the pitch; our number 10 implementing the press, with the two holding mids' starting positions further forward. They also had physicality, harrying and a narrow approach in their wide areas (AMR and AML).
So personnel wise:
GK: Cech : Howard
RB: Ivanovic: Stones
LB: Azpuliecueta : Baines
CB: Cahill : Jagielka
CB: Terry : Distin
MC: Luiz : Barry
MC: Matic : McCarthy
AMC: Oscar : Osman
AML: Hazard : Mirallas
AMR: Schurrle : Coleman
FC: Eto'o : Lukaku
1. It may sound crazy starting Coleman further forward in our biggest game of the season, but his harrying work would be identical to that of Schurrle and it'd be a bit of a tactical curve ball for Wenger to deal with. Don't forget that Coleman has played in that position before. I'm aware that he plays better as a RB, but this game is not about getting Coleman to play at his best; it's about getting the win.
2. Stones being more of a "defender" at RB rather than Coleman bombing on would compensate for the narrow pressing from the wide areas and negate the threat of Gibbs driving on from LB for them. Stones would also be there.
3. Osman is probably our most tactically disciplined number 10 and would implement the press well from there, whilst doing a man-for-man on Arteta in the same way that Oscar did.
4. Everyone else is pretty much like-for-like.