No, no , dont do it. Hire a M3W by all means but dont sink money into one.
i went from 3 to 4 and the trad Morgan has more depth to its appeal, not perhaps as exciting on first glance but a much better product in the longer term imo.
i still have much affection for the 3W but am relieved i no longer have the worries of actually owing one, i think hiring when the urge is strong is the best route.
swapping your 4 wheeler i think will lead to some regrets in the future.