I have a small room 20x17 feet floor space and 8.5 feet high. I already have a pair of M3ti speakers. I want to add QS8 and VP150, but is it too much for my room? Should I just go with QS4, and vp100 and save some money? Your advice will be appreciated, thanks!

Here's my first plan:
VP150 center
m3ti front's
QS8 Rear
Marantz SR7001
Hsu sub undecided

Second plan:

VP100 center
m3ti front's
QS4 Rear
Marantz SR7001
Hsu sub undecided