Okay. My build is finished, it's similar to yours but i did some stuff and can give people advices as well if they really want air cooled case.
i9 9900k is hot chip, like honestly if people plan to just game there's no point getting it. I've managed to tame but used two coolers, first was ShadowRock LP and i had to set TDP limit to 130wats or either AVX to 2, temps were in around 79-80 degrees during prime and Cinebench, then i tried getting APX 100 Copper and it helped quite a bit, now my temps are 29 idle and i do get 69 load with just AVX at 2 without any boost restrictions or TDP. If someone has money to spare i do recommend AXP in Copper, but be aware it's retention mechanism or mounting one is kinda not that good.
My RTX 2080 gets burning hot during open world games like Anthem, BF, Metro Exodus. Temps are in 70ie at Ultra , thus i put one Noctua fan on the bottom. Getting a damn fan on the bottom was hard, because AXP 100 and ShadowRock heatisnks are big there's barely any room for pslate cables and they take fan's space. So if someone wants bigger fan on the bottom i rather recommend getting non-sleeved custom cables from Silver wire or put longer cables behind psu. RTX 2080 retention bracket is also sticking out a bit as Nvidia used thicker pcb. Second as author has said my back plate or I/o of GPU has started showing a lot of scratches and silver colour solely because when i tried to make it flush aluminium case rubbed of the paint, and it's hard to avoid.