Just ordered exactly the same.
Sooo...I changed my mind. Cold light of day, spending £4K on a laptop wasn't something I could carry on and do when in my heart of hearts I probably want the re-design when/if it arrives. Also I have specced for edge cases, vast majority of the time 16GB and 512GB/1TB would be more than fine. I have actually ended up ordering a hardly used 2018 2.6 i7 with 512GB / 560x for £1500 from ebay and 2y of Applecare left....if I end up running out of space I am sure an external drive won't be all that hard to deal with.