you should get like an 1tb hdd 7200rpm for videos and that stuff that you just want to have and will not use all the time, an ssd that is like 480gb for your games, that should be planty in storage department. About processor yea i think you should wait 9th gen and get i7 9700k , in my oppinion unless you edit videos and want them edited fast you dont need an i9. About ram you should get like 32gb (you realy need that much more and you would be fine with 16 but 32 is better) of at least 2933 mhz. You said you are getting 2080ti so thats ok in gpu part. Cause that will be an i7+ you would be best off getting watter cooling, if it is from corsair, artic liquid or coolermaster you should be fine with most, like just dont get cheapest one. For case get any you want that fits your style, just look at dimensions of your gpu and its dimension,look that it has a mesh and place for fans wich can filter the air in it (3 or 2 on front getting air in and 1 on back and 2/3 on top getting air out, but our watter cooling rad will probs take out spot on upper part of case), like dont get mini atx cause rtx cards make a lot of heat. For power supply get seasonic focus plus 850wat or 750, depends on cpu ( https://ksp.co.il/?uin=51665&select=.1108..140..142. ), like i got same psu with lower wattage and it is realy realy good, it makes almost no heat, its fan is silent and it is fully modular. And like just look for collors with that. And when 9th gen comes out look at some motherboard reviews and pick one with good reviews for your cpu and that fits your theme collor or wahtever