Starting with the case, the only thing that someone has to say is get the one
that you like, you will be looking at it for a long tine, so for me if it was between
the A240 and the spec M2 i would go for th 240.
Also in my eyes the 240 appears to have slightly better cable management
capabilities, but as I said, you will be looking at it, so get the one that you
like the most.
Motherboard looks OK, but if you are going to put an M.2 SSD and VGA you
might have to deal with some extra heat on the m.2 SSD since the m.2 slot
its located above the first PCIe slot. However not sure if any other manufacturers
have a different location for th em.2 slot.
RAM looks good, 4x8GB is more than enough for everything, at least for the
now, later and depending on your use this might change, but for now 32GB is
the best choice for an X99 system.
My two cents.