Flash Titanium Build for a trip and then commute

So...I discovered yesterday that my family gave me a ticket to visit my sister in London for next week. My family will leave London at the same time that a friend of mine is starting a trip trough the west cosat of Italy and I've decided to join him.

I could bring my BMC road bike but for some time now I've being contemplating getting a Ti CX bike to try the sport and at the same time commute with it.

Any input on these question/choices?

1) Frameset: From a quick browse of options, the ones I can afford is the On One Pickenflick and the Kinesis ATR. It seems that both of them have some pros and cons, but both have great reviews online.

On One
Pros: The On One is the cheapest option of a Ti CX, it seems to have a proper CX geometry
Cons: I usually ride a 53cm TT road bike and their smallest frame have a 54cm TT, don't how would that affect me (I have 170cm - 5" 7, small I know). The frame doesn't have any eyelets for rack/mudguard, but for the roadtrip I'm thinking about fitting frame and saddlebags so it's not a big deal as far as I can see

ATR
Pros: Seems to have a relaxed touring geometry, have eyelets for mudguard and racks
Cons: Seems to have a relaxed touring geometry to CX, kinda pricy

2) Wheels: I'm thinking about getting the Kinesis CX wheelset. It's affordable, lightish, have good reviews online. The other option is the Shimano RX31.

3) Groupset: Shimano 105 5800. The only thing I'm still debating is about getting the hydraulic package or not. It adds a lot of £ to the price of the groupset :-/

4) Tyres: At the moment I'm focusing on a tyre for the trip that will be used to commute, so no need to focus on a proper CX rubber. I still didn't figured it out a good width/model.

5) Camping gear: Never camped so I need to buy everything when I get to London. Help?

So, that's it, I'll update this thread when decisions/purchases have being made :)