Looks like a great idea,,the factory option shield is like $42,,the only thing I would change on yours is maybe bend the front up so the heat stays off the PTO/clutch/belt,and hydros,,before the heat went towards the ground now its blowing out the front,sides and back
These machines stripe good enough,I would worry about putting too much weight on the cheesey deck hangers and lifts,,I see mine flexing alot all the time.
Guaranteed weak spot on the SD mowers.