Nuru, that Superflex, from another thread, is some kinda heavy stuff. I don't think I will go that route. Antifreeze might be a better solution (no pun) for you--is puncturing a problem you think you may encounter?
Also, I guess I might have misunderstood, but you cannot mix and match tires with R4 on the back and turfs on the front. Frankly, I not much for turf tires but that is just me.
I sure hope you go with the 60 in MMM because a 54 will be a waste of power and actually will not cut as close or tight as a 60--it's true.
Orange more bouncy than green? Why you are mistaken!
Hey, you are the proud owner of a bouncing baby green tractor---you will get used to it, might consider a kidney belt. One thing, now that you have a real tractor and not a tractor styled lawnmower you can smooth, fill, grade, contour all those "rough" places away.
J