You can drop the RAM to 3200Mhz if it's just for gaming.
The 3600Mhz Corsair Vengeance RAM PCS use has a clock speed of CL18 whereas the 3200Mhz has a clock speed of CL16. What this means in non gibberish is that in terms of gaming these are basically identical sticks so you can save a couple £ there
Can I ask what monitor you'll be using? I see people recommending a 3080 so I assume you have a monitor that can support the 3080? Otherwise it's a waste of money, Monitors that could make use of the 3080 start at around