-- A cheaper card would do for now for what i need.
no its for 3D content work, 3d modeling, unreal 5, rendering, video work. gaming is secondary.
Are you sure about that? A lot of the software involved in this ^^ type of work uses the GPU now (and VRAM can be pretty important too), so if time is money you might be handicapping yourself severely here by going for a 3080.
Depends what you want the pc for but looking at your component list there would be a lot of savings possible.
Agreed. I can see around £350 worth, maybe more, since these choices (like the motherboard) contribute relatively little to performance, whereas a 4090 probably would (depending on the software and what you're doing with it).
(There's no 4080 in the benches I linked)