Wlutke/
Anyone with an 8 ft wide room using a full range speaker
will have, in your words slow bass.
The reason for this is you would be 12 db up with your bass in room response with your speakers positioned in the corners loading the room.
This is easily fixed by high passing the speakers without a sub.
pop a Vandersteen x 2 in the system and start at the lowest settings and work up until the desired result is achieved.
These speakers can sound as fast as you want them.
The Audio quest interconnects/Speaker wire will be better choice for the rest and as Zd542 say stands and proper laser tilt back is important.
Best JohnnyR
PS
Sound Anchors with all 3 spikes properly adjusted side to side level and tilt back is vital rip off any heavy wall padding and go to diffusion as well at the first side wall reflection.