I have a Pioneer AX4AVi Amp with Pio 868 + Arcam CD82 Speakers are currently 6 x B&W VM1 + REL Q150E I am contemplating a pair of GR10's + Centre to replace the front soundstage. Questions: Is my Pioneer amp good enough to warrant these speakers? Is it better to Bi-amp and therefore give up my centre rear? Can they be placed directly onto a cabinet (I know stands are better but room does not allow) Is there a mini stand that could work sited on a small low level cabinet? Thanks for reading.