so I'll probably touch base again for one final check before making the purchase.
from ocuk:
ryzen 3700x
Scythe SCMG-5100 Mugen 5 Rev.B PCGH edition
msi b450 mortar max matx
powercolor radeon RX 5700 XT dual fan
Kolink citadel Matx case
2x arctic cooling p14 pwm pst fans (not pwm pst co)
not from ocuk:
crucial ballistix LT 3200c16 2x8gb
sabrent rocket 1tb nvme ssd
evga supernova g3 650 gold modular psu
this is obviously the best value build
(better value if you swapped the 3700x for the 3600, but your budget allows for a 3700x)