Putting the XR7 in the front is certainly do-able but does have a set of challenges (of course) due to the thickness of the radiator.
This is what is shown in the photos. With the 360mm, you'll be able to have anything that fits in the top in push/pull as well as an XR5 in the side. You won't be able to fit an XD7 however - the pump housing won't clear the thicker radiator.
This will really limit what you can put in the top. You won't be able to use the XR7 360mm in push/pull (only a single layer of fans) nor would you be able to use the XR5 420mm. And you won't be able to configure push/pull on the front with a 360 in top either.
Finally, with the XR7, you won't be able to configure push/pull if you are using the standard PSU shroud; you'd need to drop down to 240mm to be able to do this. If you are using the low profile shroud - or you remove the shroud entirely - you'll have room for push/pull on the fans.