johonew

I agree. Fuji are making some sensational glass. The adaptors help those of us who own legacy lenses and need to devote available funds to acquiring one or two X camera bodies.

Answering my own question: I rented the 50-140mm and a 1.4x teleconverter for the trip. I did not anticipate how much I would enjoy using the 50-140mm. I used it for a lot more than wildlife shots. And even though I have an X-Pro 1, it focused quickly enough for my needs. 
 
The teleconverter was a nice surprise. Images taken using that were perfectly sharp as well, despite my worries that adding this component would degrade the image. Apparently adding a teleconverter does not mean an automatic decrease in image quality. See here:
 

 
My only regret is that I didn’t go with the 2x teleconverter. If I had to do this over again, I would have used the 2x teleconverter. I tried the 100-400mm before going on the trip, and I would rather have the 50-140mm and a teleconverter.
 
I didn’t see any breaching whales, but saw a lot of them swimming around.  
 

The problem with those whales is that they are really unpredictable and it may be hard to find it on time with the narrow FOV of the 100-400. My best shots I have made so far were at around 200mm with a lot of cropping but at least there was a whale in the picture :-)

I lucked out for once. Just ordered from B&H the kit with grip 18-55 and 35. Only problem is I am an instant gratification person and the site shows 7-14 days and I am not even sure if that is a real number because it says that everyday. Usually I will pay more for instant gratification. But I am holding strong now. I could go to Amazon and get it all individually but with B&H i get the kit deal and no taxes. It's just SO hard waiting. And I just know when they do ship it will ship on a Wed which means 3 day shipping turns into 5 days because of the weekend. 

There's always a deal just after you bought something. Fact of life.

I've already pre-ordered the X-T2 last night when they went live. I prefer the ergonomics of the X-T2 as well as the flip out screen, tethered shooting, and the optional battery grip. The X-Pro2 not having those features made it a deal breaker for me.