Hi Dinesh,
Considering your traffic pattern with the ASAs, I'm not sure there is a single interception point without rearchitecutre. However, I would consider putting WAEs in front of your server VLAN as well as on your internal network. There are ASA inspection commands (Inspect WAAS) for WAAS with the appropriate code levels (7.2.3 release and higher, as well as v8.0.3 and higher).
Hope that gives you some direction...
Dan