Dibbs, the LED's range from 1.5W to 7W and are switched in banks. The room is 50ft long with three functional zones, Kitchen, dining and TV/sofa. There are 4 wall lights at 9W CFL each.
If all the lights were on at the same time, then a total draw of about 4x9W + 10x7W + 6x5W + 20x1.5W = 171W,
but in actual use we rarely have more than the wall lights on, occasionally turning on the kitchen lights when cooking; 100W
There are 120x GU10s and 24x 9W CFLs in the barn ranging from £3.50 to £22.00 a unit. It was quite a capital outlay, but it was for a new build so had to be done anyway. And even if every light was turned on (extremely unlikely) would represent a maximum of about 600W. Actual peak lighting is around 250W for maybe an hour or two a night. The equivalent of 4x 60W incandescent bulbs. I got my green wings
EDIT: BTW as oldgit mentions, good downlighter fittings are worth getting. There's a lot of pressed tat out there. It took sometime to find the ones I wanted which are cast Aurora ones with the lugged lockring that oldgit mentions. Far superior and really not that expensive, about £4 each I think I paid in bulk from a wholesaler.