I think many of the smaller shops around the country also have an online shop!?
There is more than Amazon, B&H or Adorama where you can shop online.
I ordered mine 2 days prior to the official release date. The small retailer is aprox 200km away from me, but he has an online shop too.
It arrived on saturday.
I would suggest to take the 12, 18-55 and 35 with you. Maybe the tiny 27mm if you want to have a small walkaround package for crowded citys.
I also own the 50-230 - but it's the least used of my lenses.
We did a 3 week US west-coast roundtrip last year, and I only used the 50-230 for a few shots.
But that may be a personal preference.
The 18-55 is the lens I use most of the time, because it's versatile and has a great IQ.
I use my 14mm and the 35mm for special scenes or in low light conditions.