the ideal wheeled trolly is a fishermans tachle trolly, strong frame easily able to carry 30 kg plus and has wide wheels, i would suggest to use this and combine it with a standard suitcase as the two will wasily work well together, i used to have one large trolly. i think it was a home made jobby and a large suitcase wwith clothes etc on it and a smaller suitcase that contained all the tools and saw and axe and some kindling for when i was moving are. i used it more to cart pallets back to where i was based rather than any thing else, but i tried to set up an area and to stay there for as long as posible some times it was a few weeks once i was set up for three months, only once was it for a few days and even then i left because of what i found rather than i had to.
suitcases are very common in skips ect so if one burst i just replaced it