I plow with a Boss V blade. I installed it myself, so I have less then $2800 in it IIRC. It came with everything I needed. The mount for the kubota had to be purchased separately.
I do not use special weight in the bed to plow. What ever is in the bed usually stays there,,normally 2 or 3 chainsaws, a couple 15 ft chains, some hand tools, axes, sledge, maul, gas cans, cant hook, and other wood cutting stuff. I just look to see if any of it is ready to fall out,,,then plow.
I have been plowing snow as high as the blade this year with no problem or extra weight needed. I have had to lock in the rear end a couple times.
I like the V to bust up the really deep drifts that are higher then the blade. I can get some speed with the blade in the V position, and not worry about getting shoved sideways from an angled blade going thru at speed.