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Check massdrop they have some decent ones there right now they have a drop for one for 54.99 they have outemo brown switches https://www.massdrop.com/buy/azio-hue-backlit-mechanic-keyboard
I personally like the romer g switches in Logitech and creative soundblasterx keyboards, they also normally aren't as loud as most cherry switches you could also try Coolermaster keyboards they are quite nice.
You could try the Sennheiser RS series they use a transmitter with Sennheiser Kleer technology you should be able to hook them up it is what most people use them for they just use a standard 3.5mm jack.
With a delid you could probably have an 8700k and if it would fit I would recommend an arctic liquid freezer 120 if you don't want to delid I would get an 8600k.
Canvas might work but you could get modder's mesh https://mnpctech.com/case-mods-gaming-pc-liquid-modding-custom-computer-mnpctech-overclock-cooling-fan-grills/modders-mesh-perforated-aluminum-steel-honeycomb-grill-intake-front-fan-slotted-diamond-round-hex/