Subwoofer to pair with Denon 2112Ci and Energy speakers?

Hello,

I am beginning to put together my ht system and wanted some help in deciding on a subwoofer, and what else to consider in completing my home setup.

I will be using the HT 90% for videos (80% cable, 10% movies,) 10% for music. My room specs are: Living Room 16x11, which has a dining room 10x8 and a kitchen.

I have purchased a Dennon 2112ci and have 2 Energy CF-70 speakers which I want to use as front. Energy CC10 as my center speaker and 2 Energy CB10 speakers as well.

I'm looking for a sub that will support these speakers and my budget is around 250-300 dollars.

I will be connecting 46" Samsing 3dLED 240Hz TV, and an Xbox and a blu-ray player. All connections would be via HDMI.

Also should I be looking at 16 or 18 gauge cables? I eventually would like to add 2 rear surround speakers to make my system 7.1.

Also with the subwoofer, should I purchase any other cables?

Thanks in advance.

Thanks. Have posted there.

Thank you, went with the Bic F12, and surprisingly, Amazon beat Monoprice's total pricing on the banana plugs, subwoofer cable and speaker wires.

Was aware of Monoprice, will use it to purchase HDMI cables soon.