I think high revs go hand in hand with smaller displacement. Those yanmars are actually pretty great little engines depending on the size of boat.You should ask Tony Athens, who will probably tell you a QSB. In any event, if you want the reliability and longevity that differentiate diesels from gas, you should stay away for the hi-revving diesels, like Yanmars.
I want to be doing a lot of offshore long hauls. I want a diesel for fuel economy reliability, I feel much more confident with diesel engines. I have a my Cummins 4bt and love it.
You are on it. The consensus is that the Armstrong brackets aren't the best for the 24ish Radon hull, you need custom following the lines. Price works out to be the same anyway now. Outboards give you good speed but surprisingly low economy for a heavy 24 like yours when compared to the diesel. Resale depends on the buyer I think. Commercial is going to want the diesel. For the rec guys, there probably isn't a boat in higher demand than a Radon hull with outboards right now in Socal.I do like the idea of freeing up the deck and eliminating the engine hatch, by putting some outboards.
I have converted a Blackman to an outboard and I feel it threw off the ride of the boat.
If I was doing outboards I would just want it to be done right so all the weight would be distrubted properly, I don't know if an Armstrong bracket is the way to go or custom built off the transom with the right degree.
I also want to set this boat up for where the resale value would be better