Go for 3070 or 3080 (used). 3070 ti is just 5 percent faster dan 3070 and runs hot not worth the extra amount.
3070 perfectly fine card for 1440p. 70 to 80 fps more dan enough for RPGs at Maxx settings.
Cooler Master Hyper 212 LED CPU Air Cooler with 4 Direct Contact Heat Pipes and 120mm LED Fan https://www.amazon.in/dp/B01KBXKP8W/ref=cm_sw_r_apan_glt_fabc_52QWVK2J77GEQWKRMSJ9
Bang for buck best CPU cooler.