I was using a 24ft. ( 6x4), switching to a 4ft. (2x2 ) for residential work. I've just bought a fibre glass 18ft (6x3). Major step forward. It covers the vast majority of residential work, reaches third storey, but is not too awkward for ground floor. One pole, no switching, except very occassionally, when I still need the 24ft.
Only other comment is that I don't know anything about this Aqua trolley, but my advice would be not to buy anything that is presented as a 'system' just right for you sir !. Buy piecemeal & very tentitively. Youd'e be surprised how little you really need to spend to have all that you need.
Personally, I'm still perplexed why anyone buys a trolley. It's neither one thing or the other. Iy's not a van mount & not practical in truth to get in & out of most cars umpteen times a day. Plus most are too expensive for what they are. My advice, build your own.