it's not stressful at all as long as you don't stress about it to the point of orthorexia.
Sniggles, a GREAT question but most of the Vitamin A problems are linked to retinol intake in non-whole foods (supplementation) but at 300% it's not really a problem. Sweet potatoes have something like a 1,000% of RDA haha. also, about RDA and recommend daily value you should check out a book called "naked calories" by Dr. Carlton