Good points on the FAK, Lono. I've always been somewhat bewildered by the common practice of scaling your FAK to the size of the group or the planned length of the excursion. Sure, it makes sense to have more stuff for more people, but I'm referring to the tendency to plan for bigger injuries with more people. To an extent, a longer trip could equate to being further out, hence further from definitive care. Yet the whole point of planning ahead is the realization that your one day trip can become three (as the OP described). And isn't a severe bleeder an even bigger deal if you're alone than it would be if you had lots of other people with you?

I can understand the desire to limit weight but I'd only go ultra-light on the survival/first aid supplies if I was playing in a very well known and well travelled area, like a small park or car-campground close to a metro area. While you don't need to carry the kitchen sink, I'd rather err on the side of having a bit of extra capability than needing something I didn't bring.