Fwiw, my D1 had a list of about 8 colleges, with 2 ‘definite’ favorites that she had visited (and even overnighted) at the end of Junior year. Over the summer she kept looking and researching, and in the autumn she ended up applying to 7 completely different colleges, in 5 countries plus the US. You have time!
The quote is true- I was there- and I believe she meant it. It’s why I am encouraging to look inside yourself, at who you are, at what is genuinely interesting and exciting to you.
Glad you enjoyed the TSA sampler. If you decide that you might want to go the UK route, sometime in June the ‘Oxford applicants for 2016 Entry’ thread will open over at the student room, the UK equivalent to CC (google all three words and you’ll find it). There are also threads on Americans Applying to UK Universities and Cambridge applicants for 2016. (they go by intake year, not graduation year, in the UK).
I have had 2 D’s do double history APs (US + Euro on the same day). Very tired hands at the end of it!
One last thing: you can go into business from any background - that’s what MBAs are for 
If you really love business, as I said go look at Wharton. But if it’s not a passion, choose a place that will offer you something that is.