Thanks for the input guys.
Lighting track is out of the question. The routing (h section guirders and angle iron) means that swa cable clipped direct looks by far the easiest way of doing it. Had another look today and i like the galv adaptable boxs with a stuffing gland out for the flex drop.
The 2 way through box and dome top would make the job a little quicker i think but there's something that i think looks ugly about swa into a through box (not that anyone will see it 50ft in the air!)..........i also think with 2 x 2.5 cables and the flex, the through box might start to get a little cramped.
Regarding my question of wago's used at junction points/adaptable boxes............would anyone have any reservations about using? Ive yet to see any joints with wago's that have 'gone bad' but wondered what others thought?
Cheers
Jim