Worth bi-amping this setup?

[PhilboSE]

This is my eBay-special setup, put together for about £800.

Cambridge Audio StreamMagic processing lossless CD rips.
Arcam Alpha 10 Power Amp
Roksan Kandy K2 standmounted speakers.
Decent quality interconnects & speaker wire etc but nothing else too fancy.

Now, I could get a similar power amp for about £200 - or less if I were to drop down to an Alpha 9 or 8.

Question is, would I get any audible benefit from bi-amping this setup or would I just be wasting my money? I think my ears are OK but not "golden".