Hi Peeps
I've trial packed my 'cargo bag' with 1 60m full rope in a rope bag, 2 60m half ropes, about 15 qds, a set of wires,
a few cams, slings harness, chalk bafg, tape, wash kit, pair of shoes and clothes and its still less than 19Kg -
so space/weight is not an issue. (we have 20 each!)
Plus you have 'unlimited' hand luggage as long as it is under 40 cm x 55cm x 20 cm - which is quite small, but dense stuff
(eg rock shoes - no slings/harness/metal stuff) will fit easily.