ORIGINAL: Campo

Wildlife Management forum would be the best place to get your answers for this one.

But, Ill take my best shot.

1) Clover likes moisture, so do alot of other mixtures. Read up on labels and websites and see what works the best. A soil test might also help you determine the NPK ratio and PH within the soil, which will also restrict or expand what you can/cant grow.
2) Minerals and calcium are the keys then I think
3) Never used one, so couldnt tell you. I pull a 50" tiller behind my kubota and it works dandy. I have heard good things about discs though.
4)You suzuki should do well, though if you have alot of clay/rocks in the soil, it might have a tougher time turning the earth.
5) As BIG as you can make it...

Hope this was helpful...