Lookin' good! You don't need much wood down there so there should be lots of room for the wood tools.
Ha. One could argue you don't need ANY wood down here. But my plan is to move my other wood down into it (about a cord) and start stacking higher. This way I keep the some of the shed's utility.
Nice build. Now that you are done put at least a 2x4 every 8 or so feet to tie from from side to side to prevent the walls spreading apart over time. Another option would be a cable stretched over the same span to hold those walls together. A cable might actually be easier because you could run it through the top of the posts and fasten it on the outside.
Wow, for some one down in FLA Wanefree, you are all set up for the north country. I am amazed by your dedication, we do that up here cause we have to for 6 solid months. I'll bet you would enjoy a good northern blizzard and I would be proud to have you alongside me as co-pilot as we take a ride to the country store in 4WD in 2 feet of snow for a quart of milk.