Actually I am going to get only one card for the start.
Now I have calculated the total power usage using the meter link given above, if I remove the quadro/ 520and use only AMD for now, provided this cable works for the 8 slot of the Card
(with all the added new fans and I have even taken in account one liquid cooling unit by corsair), my total wattage is coming to
Load Wattage: 607 W
Recommended UPS rating: 1100 VA
Recommended PSU Wattage: 657 W
Should I try running the AMD with current PSU?
As I am not buying the second card now, maybe I can save cost for buying a PSU now.
That will save a lot from budget and will cost me 30 K + 8 K ( fans/filters) = Total 38 K