NicNac, definitely get along to a local meet if you can and try some things (if you haven't already).
Vatanais are great starter wraps, but at 10kg you may want to go for something a bit heftier. Although, the Vats would be fine still in multi-layer carries, particularly the jacquard ones.
How big are you? I generally recommend starting with a rucksack carry for back carries, which most people can do in a 4 or 5.