I would be going for a Genie type manlift. Firstly and most importantly from a safety standpoint (they're engineered and certified for the application).
It would also give you more flexibility to access areas in a "comfortable" position as opposed to (no doubt) sometimes having to reach or put yourself in awkward positions.
Lastly, it may even save money in the long run. Think about how much faster it would be to get out, and up and down while you're working. Regardless of that possibility, it would appear (from the equipment in the pics and the size of business indicated) that purchasing a manlift would not break the bank.
