I am looking to buy a john deere 7000 planter no till with dry fertilizer hoppers. I am wondering what hp is needed to pull it? It has 13 wave coulters on it and I was wondering how good it would work in a corn filed that has not been disced at all? The guy is asking 3500 for it and it has new augers in the hoppers new coulters and new covering wheels? Any other info that you all think I would need to know would be appreciated.