we have a 6 (front) and 5 (splitter). We have been very happy with it. We had the 6 row and when we bought the splitter, we bought it from the company and everything was new. Dad hauled all the parts to the housee and we assymbled there.We love it. As others have said, i would be leery of pulling it that far. If you are on good roads, it will pull fine at 20mph, but once you hit bumpy patches, better be prepared to slow down.

Ours has a transmission for the front, and a transmission on the rear, so i can't help you out there. Would say that the one problem i could see with that setup is the frame on the 4 row.  neighbors, which happen to be relation of ours, have a 4 row wide and after we got our splitter, and they saw how slick it worked, they ordered one for theirs.  they got a 3 row splitter for theirs. Also want to say that they busted their frame or had something big go wrong with it after they got their splitter. with the boxes full, that is alot of weight being put onto the frame and 2 tires, but i would say if you go slow, be smart, and the frame is in good shape on that planter, you shouldn't have any problems with the frame or other things while pulling through the field.