I'm currently developing a 5-2-3 cum 3-4-3 at Arsenal. I'm planning on doing some tests with other teams now as it appears to be playing very well at Arsenal - however, I'm fully aware that their resources far outstrip most clubs.
Pretty much the same formation as you, except I use WBL and WBR with farrows to ML and MR.
I play narrower than you - 10 at home, 6 away as I find the opposition find the gaps between the DCs quite often and score too many that way. My defensive line is also a bit lower, though I also find that you may need to put it back up if you're playing teams that play in the gap between MC and DC.
On the away framework I barrow the centremost defender to sweeper. All of my defenders are on the same mentality (11 at home, 6 away), same closing down (8) and same creative freedom (4).
I also avoid the offside trap and I do play counter attack.
Taking those side arrows off your strikers may help. I play without them at home and score bucket loads. If you score enough, you don't have to worry so much about defence.