Hi The Recoverer, PLEASE, do not apply to 27 schools. You will regret at the end, trust me.
Let me tell you this, group the schools into classes, and make your personal ranking of the schools(considering cost, distance and everything). Even the least ranked school should be a school that you wouldn't mind going. Please do not apply to a school that you don't see yourself attending. Apply to the schools that do rolling admissions first, apply to just about 2 of them (they must have significant difference on your ranking), read previous thread to know when first interviews are conducted for each school and make sure they both do not have interviews at the same time.If the higher ranked school accepts you then ignore all the other schools that fall below it(saves you time and money) and apply to 2 more top schools. Now you have an edge on the other candidates since you'll be more relaxed at the next interviews and more experienced. If the opposite happens then apply to 2 schools that are above this school and 1 top school (according to your rankings). It's just simple, if a top notch school accepts you, it makes you aware of your stand with the applying class so you push for 2 more top schools and hopefully one of them will accept you, and that makes your decision easier. If the opposite happens, this is when things get tricky, you would have to apply to 2 schools that you ranked above that school and 2 top notch, this will cost you more but that's probably where you stand. After all if none of them accepts you then you just have to attend the one that accepted you. If none of your 2 initial schools accepted you, then try to lower your expectations, apply to 2 more schools within or below that same rank, 2 schools in the middle and 1 top school and keep your fingers crossed. That's the whole meaning, benefit and trick to applying early. So you see, regardless of what happens the maximum number of schools you ended up applying is 7(considering the worst case) and not 27( which is just wasteful). Start this whole process by September or latest by October, you'll be surprised to see so many people starting their application in January.
All the best. Everyone I know got into a school, even the ones that weren't prepared and were just trying their luck. Don't stress too much about this, there are some schools that will even accept you without supplemental application. Don't waste money, for you'll regret doing that. The days of waiting a whole year to apply again is over.
Hope this helps.