hi there
right, therfore a building run of about 300metres, on a number of walls i expect.
remove the per metre price and charge for the job yu will get more from it.
make sure that you charge in for the kit, and any difficult access.
we had a job once where we had to be 13 metres high but the nearest a cherry picker could get was 18m away, so please make sure that you get it right.
another thing would be is where the nearest water supply is??
regards
martin