deepakvrao
Forerunner
1. R9 7900 outperforms R7 9700X. Slightly higher single core performance is not worth considering unless 9700X is 25k or so, in which case, money saving can be a point
2. Your call. Check reviews by Gamers Nexus, Tom's Hardware, etc. Don't follow AIO market a lot as I will never buy them. Check for brands with 5 year warranty.
3. Gigabyte B650 Gaming X AX still remains my choice although it is not white or silver.
4. MSI MAG A850GL White - https://www.pcstudio.in/product/msi-mag-a850gl-850-watt-pcie5-power-supply-white/ as suggested by @PunkX 75 looks great
5. Cheaper fish tank - https://mdcomputers.in/product/deepcool-cg-series-mid-tower-cabinet-r-cg580-whnda0-g-1
6. Extra fans - https://elitehubs.com/products/arctic-p12-max-120mm-cabinet-fan-white
(Poor value for sure but you are paying for aesthetics at this point). Maybe consider for a traditional white case, not fish tank? I got my friend Lancool 216 white or can consider CM TD500 Mesh White.
1. R9 7000 is 5K more so likely worth it
2. Will do
3. OK. Will have to decide between 16K for black or 21K for white then
4. That is 850. Want to future proof with 1000w. Is ANTEC a BAD PSU?
5. and 6. THANKS