Just bought a new house,

H/T room is in the basement
Dim: 7'8" cielings, 17' wide, 19' deep

equipement:
Tosh 61" H/D rptv
Denon avr-4802
M-80Ti's front mains
Vp-150 center (top of 61" tv)
front right corner klipsch ksw-15 sub
QS-8's side surrounds with stands
QS-8's rear center surrounds with stands
M-80ti's rear corners for 7 channel stereo "B" (music listening)

now here are my questions....
is this setup too much for the room i have
what is the best placement for mains (spacing directly each side of rptv?)
what is the best placement of all my surrounds with stands (how far from listening area for side and rear surrounds)
should i bi-wire all my speakers for better sound?

thanks Ian for your reply in advance....

7.1.4 * MRX1120 * M100s * 180HP * 4x M3-on walls * 4x M3-IC * dual XV15se * Shakers