Don't worry about that, each and every post that is discussed by the people in the US or any other country, and all the parts that they are using is pretty much available everywhere and its a good place to start. Try finding a good motherboard with 6 PCI-e slots, get the budget CPU which supports the socket of your motherboard, 4 gigs RAM, 32 GB USB Stick if you're going to use Linux or else 120 GB SSD for Windows 10. It might feel a bit daunting until you actually try it.
Any recommendations for the Motherboard? Without burning a hole in my pocket...
I was thinking of a LGA 1150 socket model but most have only 1 or 2 pci-e slots except the ultra expensive.
What's your budget?
I got "ASUS Z270F Gaming" for Rs.14,500 last month in Mumbai and successfully use it with 8*1060s and 1*1070, so total 9 GPUs and NVoc OS on a 32GB pen drive bought from Amazon.in.
Intel Pentium G4400 CPU for Rs.3,900
8GB RAM Corsair 2400Mhz for Rs.4450 (Overkill, you can buy 4GB too, my rig hardly uses 1GB of RAM)
2*Cooler Master V850 (Rs.11400 from one shop and Rs.12400 from another shop because the first one only had one)
I had bought Riser cards on eBay.in for Rs.1000 per piece and then imported a bulk shipment from China, but do that only if you have an IEC (Import Export Code).
And I had bought 2* m.2 to PCI-E converters from a Chinese website which I used on the 2* m.2 slots and attached 2 riser cards to them.
You can PM me if you need help but don't expect a quick reply.
As mentioned by others, mining isn't much profitable, I'm making around Rs.20-30k income on the 9 GPU rig, so if you can hold your ETH for a few months or a year, when the price might touch $1000 next year, you may profit, but otherwise don't expect to make a ton of money with GPU mining.
Also, the GPUs that you have selected don't really have a good hash rate, I am buying 18 pieces of P106 (Nvidia's new Mining GPU) this week, I still don't have the price, but that will give you much better hash rate.