how long will it take to get my money from the FDIC?

From what I remember from the 1990 S & L crisis, FDIC was very prompt. The regulators would come, take over all assets and pay off the depositors the same day. (The assets were then transferred to Resolution Trust Corporation (RTC). I remember seeing some assets disposed of at 20 – 40 cents on $ – usually commercial properties.)

Will the FDIC get me all of my money back?

$100,000 per account maximum, absolutely firm. Not a penny more, even if you had millions.