Impossible to say.
However, when pulling with the rippers down 3" to 4" in the soil you will be moving slowly.
Most Box Blade 'points' are crimp on. I have had two pop off over the years. Crimp on 'points' are one fail safe opportunity.
I use a
Hydraulink Top Link when operating my Box Blade and several other implements. Before buying my Kubota L3560, I used the Hydraulink Top Link on my light 'B' series Kubota B3300SU. Besides making Top Link adjustment easier, the Hydraulink is a great shock absorber. I believe Hydraulink preserves welds on both tractors and implements. This may be your $250 answer. (Sold on eBay, Amazon and by your local Agri Supply)
VIDEO:
HydrauLink Category 1 Cylinder - For 45 HP Tractors or Less, Model# HL-11 - YouTube
PHOTO: B3300SU/HydrauLink/Bush Hog (brand) 60" Rollover Box Blade.