Would more room make loading easier or harder?

I've never measured exact clearance between swing out posts and dually fenders on my 2000 Ford F350 and Arctic Fox rig. I know it's not alot of room...I think the basement is even tighter on the wheel well molding on the inside of the truck bed. You'll still need to be closely aligned not to hit those even if you add the bracket extension. Does that make sense?

However if the outer duallys rub the jack feet, I would add the welded extension you're talking about. Send some pics once complete!