with that much weight in the tail, I'm considering the result of a hard landing and how that will play out.
I'm sure thats why all those doubler plates are there at the attachment point.
The tailboom is sure to buckle or snap right off when you plunk it down excessively. Lets assume the gear can handle it and only spreads, but that extensive tailboom damage will result in an uncontrolled spin I'm sure and then a rollover.
40lbs back there is alot to content with.