Something to simply be aware of.
And it appears you have not forgotten, good.. Another good example, if I can drift a bit, was the Huey. Many variations of it but as there are also different UH-60s, the one big difference was that the Huey used two airframes.
UH-1B, C, M etc. had the B204 airframe, wheras the D,H,V etc. had the B205 airframe.
When I transitioned from the H to the M, the first thing the IP did was take me way up in the mountains and do a 360 turn at a 50'OGE hover on a hot day (in a big LZ) Dam thing ran out of pedal. Lesson there was although it was a Huey with an L-13 etc. The tailboom was still smaller and the tail rotor cannot handle things, Hot, Heavy, High........
Back to reality, Im still voting for the L-4.........