I have the hdplex 160w and i am planning to build it with an i3 7100 and gtx 1060 6gb variant. Currently i am waiting for my mobo and cpu to be delivered. I will a video or a thread once i am done with my build.
If you have not purchased the cpu., Please use a low tdp cpu like an i3 or so. If yu are yet to purchase the gpu then i suggest you to get a nvidia cpu as it has a lower power consumption value assuming you are going with hdplex 160w.
I am not an nvidia fanboy but i am just telling you that if vega comes, it is going to be a new architecture and amd 400 series may go obsolete or may or may not have reasonable resale value.
Anyway this are just my thoughts. On the other hand, if you have friends in usa who are gonna visit you on a holiday or so, you can ask them to purchase it for you or freight ship to your address if possible.
Hdplex 160w is much better than z4 atx as it has dual rails and performs much better than z4. Btw, i have heard that z4 gets so hot that it often melts under heavy load. If you are in need of a pico style psu. I suggest to look at G-unique pico style psu at market section of this forum.
My system is actually up and running, so i have measurements what it is pulling from the wall at the moment using my 80+ Gold FlexATX PSU. I just want to change the PSU. But you are right, i am pushing it. But i also think the CPU is fine. The maximum TDP measured with Open Hardware Monitor was 43W CPU Package after running prime95. It is undervolted by 0.1V. In an open system the Intel stock cooler easily cools it to 61°C at most.
I am really more concered to the GPU, which while averaging at 75W (GPUz) produces clearly some spikes here and there.
The absolute maximum reading of my system under Furmark + GpuZ Render test + Prime95 hit 200W a few times. Gaming Rise of Tomb Raider, i didn't go above 150W