More ideas :
HotSwapp drives in the same location of the second SFX I recommened :
the most annoying thing in such compact cases is change the drives and plugging /unplugging cables.
so we can use hot swap bay in there for minimum cost ..
how ? easy
Just TWO or ONE 3.5 inch drive metal bay thats all with the screws in it. this will take a 128.5 x 101.6 x 25.4mm hot swap kit !!! and FITSS!
Give the SFX height is 6.3 cm this is more than enough for it
now inside that cage you can :
1- add 2x2.5 inch drives in HOT SWAP mode , using something like this
example one
http://www.silverstonetek.com/product.php?area=en&pid=642
two
http://www.icydock.com/goods.php?id=234
three
https://www.amazon.com/dp/B001CYZC38/?tag=theminutiae-20
This fits inside the 3.5 harddisk cage and the screws are the same !!!
and it will fit in the case up after the power supply
will give you hotswap no cable hassle in your tiny case !!!
this can lead if you want to make the upper section of the case cover metal with cutting for 3.5 inch bay to be external reached , or just keep it inside and to access it open the glass cover ...
if you make the cvover up metal and lower glass would look better for the power supply looks ugly and at the same time you will have EXTERNAL 3.5 inch bay to put that accesory in it and have 2 2.5 inch hotswap bays !!! change HD without getting inside the case or even plugging/unplugging power and sata cables any more .
in short : MAKE THAT 3.5 inch CAGE is EASY just a metal box with screws in it ! it can be used for external hotswap bays !
if you make the cage for TWO 3.5 (128.5 x 101.6 x 25.4mm each) , you can have FOUR 2.5 inch hotswap in there !!!
Edit : this is standard 3.5 inch bay , you can also add , card reader in it , or van controller as well. not only hotswap harddisk
the 3.5 inch harddisk will not fit since it is 145mm long , but all the other bays will fit , the hotswap 2.5 is only 100mm long and the card readers and fan controllers are even shorter.