750w psus are meh.
for budget builds with cards like 6600/7600/4060 or even 4070, 650w is plenty but for cards that pull 300w they might be insufficient. Either pick a 550w/650w (what I recommend here) or go with 850w+
Also, swap that 980Pro for a SN580, 2TB costs just 10 pounds more, and you will never tell a difference.
Might wanna consider a 4060 over 6600xt, it's about 10-15% faster, more power efficient, and has dlss. worth 20 pounds for the performance and efficiency alone.
I would pick a 6/12 ryzen 5600 with a b550 mobo over 12100f with b760 any day. And for the cooler, get this
at 33 quid it's like you stole it, might outperform high end noctua/bequiet at half their price.
so, all in all,
5600+b550>12100f+b760
leave the ram
6600xt upgraded to 4060
2TB sn580 over 1tb 980 Pro
downsize the psu to 650w
get the thermalright cooler