I really do wonder how some people here buy 3 slot cards, 3.5" drives, multiple 2.5 SSD's, and come to a SFF forum to the one thread where the creator wants to make it as small and cool looking as possible and start to request space for their hardware...
At this point, it's best to just say nothing and wait for whatever dan decides before investing yourself more into the project.
I feel you, makes me laugh at the idea that some people look at a lunch box and want to stuff a 3 course meal in it when it's only meant to hold a couple sandwiches and a drink. They can't grasp the concept of having a computer case that is minimal and meant to only contain a barebone amount of hardware to complete the desired tasks the system was built for. I own 3 sff cases, the Louqe Ghost S1, the Dan A4-SFX and a NCase M1. The Ghost S1 is my AMD Vega 64/Ryzen 2700X game machine and the M1 has a i7 9900k cooled by a Corsair H100i V2. Both systems have Samsung 970 Pro 512gb M.2's as their boot drives and Samsung 970 Evo 2tb's for games and storage. During gaming the M.2 on the Ghost S1 gets hot and hits temps over 100 degrees celsius. The max temp for the card is rated at 85 degrees celsius. I think it may be due to the fact that by being on the bottom of the motherboard, it's sandwiched between the motherboard and the video card. During gaming, it's giving off heat as data is accessed off of it and gets exposed to heat from the cpu and the video card. Now with the M1, the 2tb card faces the right side of the case and is able to be cooled by air drawn in from that side of the case so it doesn't suffer from operating temps going over it's max rating. With the A4-SFX I only used a M.2 as the boot coupled with an external ssd so I never experienced the issues I've come across with M.2 temps in the Ghost S1. I made the mistake of purchasing an Asus Strix Vega 64 and it is too big to fit in any of the 3 cases I have. So the point I want to convey to all the people who are clamoring to want to be able to stuff dozens on 3.5/2.5's into cases of the size of these cards need to go ATX or get a NAS if their needs are so demanding.