Case Recommendation for odd motherboard

[Bishop Crane]

Hi All,

I'm after some recommendations for a case, however my motherboard is very big.
My motherboard is a Supermicro X9DRi-LN4F+ which is EE-ATX (not a standard!) it's 34.7x33cm (13.68x13 inches)
Now it mostly fits in an ATX case except that it extends beyond the IO shield by about 4cm. (I've attached a picture) Normal ATX motherboards don't, and herein lies the problem.
Most cases don't have that extension room, so I'm after some suggestions.

I'm currently in a Corsair Air 540, I use the work "in" loosely as the two Radiators are outside (see the other picture) they do not fit otherwise because they would interfere with the RAM.

Obviously this isn't ideal, and why I'm after a new case.
I'm fine with drilling holes for the standoffs, but would rather not be doing major modifications.
It needs to fit;

The motherboard

2x Corsair H115i Pro

1x 5.25 bay for SSD caddy
minimum 4x HDD

 

Budget is up to about £150, and I'm happy with both new or used, there are almost no brand new components in the PC anyway.

Also, yes, I realise its a bit of a rats nest, one of the hard drives isn't even mounted.  I do plan to sort this out when it rebuilt.

Thanks for your help in advance

[Guest]

That's one odd computer. I am not 100% sure but I think everything you listed would fit in a Corsair 900D. 

[Guest]

Here is a picture, would this be enough space? I saw people place thick rads+ push pull fans so i think you are fine there

[Bishop Crane]

Thanks for the suggestion, It is one of the cases that I looked at, and from what I can tell it will fit, it will be tight up the top, but it should fit.
I wasn't so sure if the h115i would fit at the front as well?  There are a lot less pictures of that.

[TVwazhere]

I found similar builds using a very similar sized board (including extension of the I/O at the top for extra RAM), but none of them used any watercooling hardware

 

https://pcpartpicker.com/builds/by_part/tjZ2FT