Of all the perils you listed above...weather(which you didn't list?)would still be my concern in the summer tropics...in my 40 years of flying only lightening and icing gets my attention....all else I can deal with
Honestly, for me, in the planned scenario, weather is my least concern. While we do have thunderstorms pop up in the afternoons, and they can come up quickly, they take an hour or two to form. I haven't (yet) seen one form from a clear sky in a matter of minutes. And if I see one along the east coast, then I would plan to veer over to the west coast. Granted, there are Miami & Orlando Class B's, but at 2000 ft it's pretty easy to stay clear of those. In the worst case of a line of storms across the entire state, I'd look for an air port to wait them out. Generally they don't last too long, and that just gives me a bit longer SI before continuing the flight.
From the context of
@Altamira's posts, I too get the impression that he spends a good bit of his flight time in significantly more complex aircraft, at low levels, in hostile territory, going like his hair is on fire.
In that environment, I can absolutely think that any of the items on his list, and probably many more, would make me climb like a bat out of Hades.
But, to your point, having only one engine, no hydraulics, and not requiring electronics to stay in the air, and being VMC, the only situation I've come up with so far where I would immediately start a climb would be if the engine began to stumble over hostile territory (Okefenokee, Ever Glades). At that point, I would want to attempt a shallow climb only because of the altitude=time. In my plane, 1000 ft = 2 nm of glide distance (roughly, in calm conditions). Being in FL, it's hard to throw a rock and not hit an airport, although it may be a private strip (any port in a storm), so even an extra 2-4 nm could be the difference between an on-field vs. off-field landing.
@Altamira Oh, don't I WISH I had the option for excessive airspeed.
Thanks for your insights. I always find other pilot's points of view helpful. And, thanks for your Service!