Re pricing, the Studiomaster Drive 12 can be found for around £199 each which is £100 + per speaker less than the RCF's (which I was also looking at). They are rated at 310w RMS as well.
Jack's comment was also one I considered, found a Gemini GX5000 power amp for around £180, and passive tops from whoever to suit (£99 upwards from Gear4Music and others).