So I was too slow in realising my mistake and I couldnt cancel my order with Elecrow - nvm, I expected to make some mistakes along the way.
Anyhoo, I've ordered the latest version.
Amusingly, I may just be able to rescue version 1 of the PCB by installing the right angle header on the "wrong" side of the PCB... I need to test my theory tho...
PS. I tweaked the design slightly to improve component clearances and add the board version.