We, Team Turner ( @ironshield and @lturner ), being of an inquisitive mind, choose Option 3
We have 1 Knife
We have 1 Flashlight
We have 1 Firestarter
We have 1 Plant Field Guide
We have 1 Strange and Cryptic Note
We were able to eat cooked mushrooms (hooray firestarter!) and must now eat by Day 8, Round 2
We predict there are no snipers in the building since we are already within sight of the upper window. If there were snipers, we would be dead already. Therefore the house is either abandoned but might have some useful items in it or there is someone there who would rather remain hidden (which is why showing weapons would be most likely counterproductive). We think there is actually only a slight possibility of the young man we're hoping to meet being there since presumably the man with the dog knows this terrain and already searched the house.
There is a slight chance of getting ourselves trapped in the house, but we've jumped out a window once already and could do it again. There is also the slight possibility of getting injured, but that's kind of an ever present danger anyway. Mostly we are being conscientious about checking out things that are not a clear and present danger since that is one way to survive in a situation where all resources could be valuable.
Let's hope we survive this one!