Camera choice help required!

Any input is appreciated on this one guys.

I was looking to buy a Pentax K5 towards the end of this year. I don't need an SLR but liked this for the IBIS, weather proofing, IQ and choice of great affordable primes.

I already own and love an NEX 3. If it wasn't for the lack of an EVF (which I highly value shooting in sunlight a lot!) I doubt I would be looking to upgrade! Actually whatever I choose I will keep my NEX 3 as a spare digital back.

The NEX 7 has made me reconsider the K5 purchase. My main concern however is that I would really need to buy the Zeiss if I wanted to get the 'most' from it and that doubles the price. Indeed I may as well buy a Fuji x100 for a similar IQ/focal length set up at half the price!

Advantages of the NEX 7 is that I could use my existing manual primes, although these are cheap and cheerful (Olympus OM 50mm 1.8 and Tokina 28mm 2.8) and perhaps shouldn't swing a purchase choice? I could 'wait' for more e mount lenses to become available and I know they will!

In essence I am looking for a high IQ camera for landscape work that I can couple with a decent lens(es) I already own the 18-55, 16mm, UWA Fisheye and the above two legacy primes.

thanks for your considered input.

PS I wouldn't consider the 5N and EVF as I could get a '7' for the same price!