New formation for arsenal 1st season

Hi
I'm Arsenal in my first season with several good players but I don't know how to get the best from them, so far I have beaten FC Twente over 2 legs, Lost 3-0 to Man U and Spurs and drew with Liverpool (I know, Hard Run). So could someone help plz.
GK: Szczeseny, Hildebrand, Mannone
LB: Santos, Gibbs
RB: Sagna, Jenkinson
CB: Vermaelen, Toloi, Koscielny, Mertesacker, Djourou
DM: Song, Frimpong, Coquelin
CM: Ramsey, Wilshere (Long term injured), Arteta, Diaby (Also injured)
RW: Ox-Chamberlain, Gervinho, Rosicky
LW: Marin, Myaichi, Benayoun
ST: Van Persie, Milito, Kadlec, Walcott, Chamackh

Thanks in advance

What formation have you been using? I'd say you should built the team around van Persie with him being the stand out player in the squad. I would then look at who will support him? You have some very fast players out wide and some creativity in the middle. I would consider a 4-4-2: I've listed my suggestions with positional roles and suggested who would be best in that role

Sweeper Keeper Defend, Szczesny
Right Back Support, Sagna
Centre Back Defend, Koscielny
Ball-playing Defender Defend, Vermaelen
Left Back Attack, Santos
Right Winger Attack, Walcott or Gervinho
Ball Winning Midfielder Defend, Song
Deep-lying Playmaker Support, Arteta or Wilshere
Left Wide Midfielder Attack, Benayoun
Poacher Attack, Milito or Walcott
Deep-lying Forward Attack (or Target Man Support with Chamackh), van Persie

#44659 kun : Hi
I'm Arsenal in my first season with several good players but I don't know how to get the best from them, so far I have beaten FC Twente over 2 legs, Lost 3-0 to Man U and Spurs and drew with Liverpool (I know, Hard Run). So could someone help plz.
GK: Szczeseny, Hildebrand, Mannone
LB: Santos, Gibbs
RB: Sagna, Jenkinson
CB: Vermaelen, Toloi, Koscielny, Mertesacker, Djourou
DM: Song, Frimpong, Coquelin
CM: Ramsey, Wilshere (Long term injured), Arteta, Diaby (Also injured)
RW: Ox-Chamberlain, Gervinho, Rosicky
LW: Marin, Myaichi, Benayoun
ST: Van Persie, Milito, Kadlec, Walcott, Chamackh

Thanks in advance