i would just use the tractors you have for square baling.later on you may want to add a cab tractor of about 60 to 75 pto horsepower.a 8 ft disc mower would fit them 3930s.as for balers mf 124 or 224 are good ol balers jd makes a good one.a inline baler is nice.you need to be careful about picking a rake.it is real easy to overload some square balers with a 8 wheel rake.
That makes sense on the tractor. The NH3930 should work fine with the NH565 baler. I will have to decide then on the mower. I like the simplicity of the drum mowers. Several guys in this area have CCM drum mowers. I'm not familiar with the technology differences between the various drum mower brands but the Reese looks tempting with no gears for me to damage. The two guys that have been haying my place both use disc mowers. One breaks down every time he's here and the other guy cuts about as fast as he can drive but seems to have a pretty good investment in cutter bar sections and blades. Open to suggestions based upon experience and knowledge.