I would echo the overall sentiment by my colleagues.
DVC allows my family to be more relaxed with our touring, as we know we'll be back again fairly soon

The full kitchen not only allows us to save money, but is used as the main reason to structure our touring plan.
To that end, our day is like this:
Wake-up, get ready, eat breakfast in the room.
Tour a park in the morning (sometimes at rope drop, but usually within an hour after), and head back to the resort sometime between 11:30AM and 1:00PM
Have lunch in the room then take naps, enjoy the pools, do shopping, walk around the resort, watch a movie, etc till dinner/supper
Eat dinner/supper in the room before heading back into the parks about 6:00PM to 7:00PM. Many people are leaving between 5-6:30PM, so crowd levels seem a bit lighter at this time.
Enjoy till whenever, head back for a snack and bed.
We do laundry in the room in the afternoon or evening, usually cycling a load between the washer and dryer at these times. It makes packing lighter and laundry isn't a chore.
As for rain, it fairly easy to dodge the rain in Florida during the summer. The main reason for it is convection heating (clouds form and build during the day as the heat causes evaporation and rising of water vapor). Once the clouds are too full to hold their load, they dump it all quickly. This usually occurs between 4PM and 7PM, and the down pours are solid but only last a few minutes. As such, it will likely start and stop in the time it takes to get through the cue and ride/see something inside. Then, you are done for the day 9usually). Also note, these are thunderstorms and will likely be accompanied by thunder and lightning (in case that causes angst).
Fronts could move through, as well, which will causes several bands of thunderstorms. These are easy to predict, though, since they have likely already hit the rest of the country and the weather reports will predict their arrival.
I wouldn't worry about hurricanes that much. If the thought of riding out these storms is a concern, simply buy
travel insurance, and it will likely cover you should you desire (or need) to evacuate. Hurricanes and very slow moving storms, and they are being tracked weeks before their arrival. You will know the likely path of a hurricane before you even leave for Florida.
If a hurricane does hit while you are these, know that Orlando is very much inland, and the result will be high winds, rain, and the occasional tornado. The most dangerous (and damaging) part of a hurricane is probably the storm surge (the wall of water a hurricane displaces in front of it), which only affects the coast. Otherwise, buildings in Florida are designed to withstand the high winds of these storms, and the biggest worry is what to to, cause you won't be going outside

. Disney (and their Floridian employees) is very experienced with this, and it has been reported that the parks are uber empty right before and a couple days after a hurricane hits, as travelers cancels plans to WDW.
As for the crowds, travel planners like Tour Guide Mike (see banner on Theme Park board) or Touringplans (Unofficial Guide to WDW people) are a great way to plan your route to avoid the large crowds of uninformed Disney adventurers.
Good luck and have fun!
- Chris