I know it's hard when you've spent so much time planning, but for anybody asking about whether or not they'll be good with a Friday/weekend/early next week arrival, the truth is that nobody knows. Any answers you get are pure speculation, and you'd get the same level of certainty from flipping a coin. The predicted path and timing of the storm itself is still changing, and even THOSE are just predictions. After the storm passes (whenever that is), Disney will assess the situation and make some decisions about reopening. Ditto for MCO. How long that will take and what the reopening timeframe will look like is not predictable. We just have to be patient, try not to speculate, and take the news when it comes. At this moment, the only options on the table are to 1) Wait and see what happens or 2) Make a personal choice to cancel/reschedule (you can do so anytime without penalty provided that your arrival day is on Monday or earlier).
I'm sorry for anybody whose trips are impacted, and I'm devastated for those whose lives and property are in danger.