Its tempting to bite and scratch the itch, but in my heart I know that all that extra CPU power wouldn't do squat for me with a 980TI anyhow and I might as well wait and do a core system rebuild in about a year or two when things ease up.
This is really debatable at what games you play and what resolution.
Yes you will be bottle necked, but its a factor in what game and by what.
Being bottle necked in R7 Siege, is not the same as being bottlenecked in Cyberpunk.
Personally a gpu recommendation is really in my +1 as your first expenditure, unless you somehow manage to get and find a 5600X + 5900X @ MSRP @
Authorized Retailer most important one as i hear AMD will not honor warranty if you bought EBAY Shuck unless they provided you with a valid receipt.
But man, those 2 CPU's are extremely stressful in trying to secure.
My cousin just about gave up on the 5600X, and i have already gotten a 5800X and gave up on the 5900X, as i feel the 7000 series will come out by the time i finally get one @ MSRP.