All mounted Bretonnia lists are quite a bore-> point and charge.
Skirmishing bowmen are allways usefull in a Bretonnia army.
M@A are of better use in bigger games..
With only 500 points I would recommend using Borderpatrol rules..
http://uk.games-workshop.com/warhammer/border-patrol/1/
The compulsory
BSB is a real point drain in 500 points.
Upping to 750 points would give you a bit more breathing space..