Thank for all of the replies everyone! Some really great tips here.
My main issue is that I am going to be backpacking so don't really fancy taking any heavy roller bags with me. Thankfully most of my camera gear will fit into my 30l rucksack which fits within the hand luggage dimensions (definitely not within the weight restrictions) and on my back doesn't look too crammed.
The only thing I am going to worry about are my strobes and arms which will most likely need to go in my main backpack, carefully wrapped in clothes! I will have to try and pad out the sides of the rucksack as well. I knew all of those styrofoam sheets I've been saving would come in handy one day!
Yes this makes sense. Although i may warn you that i did a similar thing, albeit not with my strobe but my housing. It was packed in a heavily padded bag(Like a beer cooler) and carefully wrapped around it was my 3 mm wetsuit, with clothes crammed around. And yet after a few trips, the housing window had an issue. So as far as arms are concerned, its not an issue, but strobes, i would like in a safer place. Just my two bits You can still pack them well enough without any problems.