Willster

Yeah I don't really care about who found research but rather that the results aren't rigged to make one party look good because of it. In a situation like this it is quite easy to decide if the vulnerability is real or not and how much of a threat it is. I mean it would be like a mechanic telling me that my oil is leaking knowing that telling me would likely result in more business for them. I mean if it really is leaking then I could care less who points it out and what motives they have. 

I bought the 3733 CL17 RAM because it's Samsung b-die, 16GB, and gets 3200 CL14 which is the sweet spot for Zen+. Furthering it by tightening the timings beyond CL14 standard.
 
 

Indeed. The 3700 series has some pretty intense rumors floating around! I'm excited to see!

On the same thought process of bang for your buck, you could likely make away with a 2700X near the Zen 2 release for a very good price. 
We will see what the performance gains would look like realistically, but if cost to performance is the key factor, a cheap 2700X would be hard to beat.

If you're located in the US, Amazon has a great deal($95) for DDR4. I have mine clocked at 3200 CL14 with tightened timings using the Ryzen RAM Calculator program.
A comparable pair of sticks clocked at 3200 CL14 goes for around 150-250 from G.Skill/Corsair. 

Waiting is good for the wallet, especially when it's this close to the launch date. You can get the 2080 right now, put up with the bottleneck, and then get the new Ryzen processors when they drop.

I agree with @fasauceome. You can get RTX2080, CPU cooler, m.2 and even RAM. I don't think Ryzen 3000 will have same issues as 1st gen Ryzen with terrible memory support, so there is no risk of having run of the mill memory like Corsair Vengeance 3200 not working with your new hardware.
 
And then you can just wait for Ryzen 3000 launch and get top tier CPU and Motherboard right away.

I would recommend holding off as long as you can.  The end of 2019 will be interesting with Intel releasing their updated CPU architecture with lower nm alongside nvidia's release of the 30-series RTX graphics cards.  These two changes could possibly be small game-changers for the not too distant future, which would drastically reduce the cost of today's high end components.  Also, ensure whichever components you decide to go with have the latest ports to maximize bandwidth and display capabilities.  Your thoughts to the more "common" components rising after a big release is spot on!  Good luck!