What can I do to upgrade

My system

1. Vandy 2Ce's, VCC1, VSM's, Hsu VTF 2 subwoofer

2. Source Toshiba DVD player

3. Receiver Arcam AVR 200, biamped with Arcam Alpha 8

4. Cables, speaker cables, fronts Audioquest Type 4, rears cheap Rat Shack Cables

No AC right now.

I am ok with system but want to see how I can improve it overall.

Listening room is a 13' x 17' room with a wide opening to the left 7ft wide or so to the kitchen.

Shriram