This would be my starting point. You may get differing opinions on some of what I'm saying.
I've gone for the 2700X rather than the more recent 3xxx series of Ryzen chips. Although the 3xxx series will perform better, the 2xxx series can drive a display without a separate GPU which saves you a lot of money. Don't order the 2700X chip until Friday though, as price is likely to come down a bit more.
32GB RAM would be sensible if you're using a lot of virtual instruments and VSTs at the same time. If not, you could save a bit of money by dropping to 16GB (get 2 x 8GB RAM if you do as that will allow you to buy more in the future).
The 960GB M2 drive will be super fast so loading big plugins will take no time at all, plus you'll have plenty of bandwidth to record multiple tracks simultaneously if that's your thing. Again, check prices on the Sabrent Rocket on Friday. You could save money by getting a smaller capacity M2 drive and a traditional hard drive with a larger capacity but I wouldn't bother - it'll be noisier if nothing else.
And on noise, I've added in a separate CPU cooler and 3 x case fans. You don't need these - the case already comes with a fan and the CPU has a cooler in the box - but these will be a step up in performance with a drop in volume. If you wanted to push budget or found some further savings on Friday, the be quiet! Dark Rock 4 CPU cooler would be a further step up in performance.
Case is personal choice but that's a cheap one, so yeah.
PSU is a bit of a punt as it appears to be a very new unit. However, seasonic has a very good reputation so it shouldn't have any problems. The only question is whether it is loud. An alternative might be this:
https://www.overclockers.co.uk/cors...lar-power-supply-cp-9020187-uk-ca-252-cs.html More expensive but super quiet - just make sure you install it with the fan facing upwards.
My basket at Overclockers UK:
