Yamaha CP4.. What Monitor Speakers ???

[musicworld]

Any advice on this would be helpful.. I'm a full time street musician, piano player, not acoustic, keyboard. The rig consists of a yamaha P115 hooked up to a Roland KC110 amp. Although at the time this was all the budget i could afford.. having said that I've now grown frustrated with the P115 as I'm unable to input any expressive performance due to it being an entry level keyboard.. the key action is generic.. and the KC110 is not wide stereo..

The intention now is to scrap the rig and upgrade to a "Yamaha CP4 Stage" with 2 monitors speakers to anable a better performance and wider stereo.. could anyone suggest what monitors to go with? This would be played out in a small town Square.. usually to around 20 people..

Budget is £300 for the pair.