I'm looking to build a home theatre set up at my new house in a room which is 20' by 29' (Yup, quite a large room) in dimensions, to be used as a living room. You can assume the space used for the System will be 3/4th of that.
Right now I am looking at a 7.1.2 configuration with
2x RP-260Fs as front L/R,
1x RP-440C as centre
4x RP-240S' for surround,
1x R-112SW subwoofer,
and 2x R-1800-C as ceiling speakers
powered by a Denon X-4300H
Would this configuration suffice for the room, or would it be too underpowered? I was also given the option of the RP280Fs, RP-150S, RP-450C with R-115SW, but this seemed a bit pricey for my liking. Also wanted to know if upgrading the subwoofer from 112 to a 115 is recommended.
Please give do give your suggestions.