Congrats. I, too, love white bikes! It sounds like you found a good LBS in that they took the time to fit you on the bike. That's great; not all shops are that attentive.
I, too, think that cages are scarier than clipless pedals. You might try a pedal that has a clip on one side and a regular platform on the other. Otherwise, I'd just bite the bullet and start climbing the clipless pedal learning curve. They're really not that bad and don't take that long to get used to.
Regarding the road vibrations, are you using padded gloves and a good pair of cycling shorts? One word of advice regarding bumps and what not on a road bike. Keep your grip light and some bend in your arms, especially when going over rough pavement. Also, don't overinflate your tires. I typically run mine between 10 and 20 psi less than the specified maximum pressure. You might play around with it a bit to see what feels best for you.
I, too, am not sure what you mean by "drop and brake." You should be able to reach your brakes while in "the hoods." If you can't, you might take it back to your LBS and see about getting shorter reach brakes.
Just keep practicing. Before you know it, everything will feel very natural to you. I hope you have lots of fun and safe miles ahead of you.
Oh, and you have to give your bike a name!!!!
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher