Best way to reinforce Rear Bumper
I recently purchased a 2014 X23b and plan on installing the Swagman Bike rack that mounts to the bumper. Before doing so, I want to reinforce the bumper to make sure there will be no support issues. The 2 aluminum bikes I will travel with weigh a combined total of 76 lbs. The 2 bike mounts weigh 22 lbs, which gives me a combined total of 98 lbs with the bikes. The bumper is made of 16 gage tube steel, and the frame its mounted to is made of 12 gage channel steel. My idea is to weld a steel triangle gusset to each frame/bumper joint (see attached for visual) This is where I need help. I have great welding skills and plenty of steel, but I'm not an engineer, so I don't know if my proposed method of support is adequate. If anyone has already reinforced their bumper or has any recommendations, I'm open to suggestions. I just want to make sure I'm properly reinforced before hitting the road.