I made an rcplanes mode with the following settings:
* weapon set: infinite rcplanes, 2 blowtorches, 2 ropes, 2 pickhammers, 2 parachutes, 1 switch hedg
* probabilites: 1 each, 0 for rcplane
* ammo in boxes: 1 each
* delay: 0 each.
It works fine except that some weapon taken in boxes (ballgun for instance) are not available. I suspect all weapons in the rcplane row (f5).