Downlight positioning of odd shaped rooms

[aveatry]

I have somthing very simular and use wide angle 10s the ones on the outside also spill light onto the walls which are white and reflect light. I find that with downlights little and often is the way to go for an even light. I have them on a dimmer switch for control.
9 x5w LED bulbs a bright and even light for a total of 60w