240mm or 280mm radiator for cooler master storm stryker? xspc kits ax or ex? plz

ok i'm ordereing the storm stryker case.. and i was wondering what size radiator i should be for the top and which model of the xspc?

i'm looking at these 3 kits

the 280 kit with D5 pump: http://www.frozencpu.com/products/1...uded_and_Free_Dead-Water.html?tl=g30c321s1310

the ex 240 kit with d5 pump: http://www.frozencpu.com/products/1...uded_and_Free_Dead-Water.html?tl=g30c321s1310

or the AX 240 kit d5 pump: http://www.frozencpu.com/products/2...uded_and_Free_Dead-Water.html?tl=g30c321s1310

i'm not real sure if the ax 240 radiator is too thick to mount up top or not... i noticed it is better than the ex cuz its a little thicker... its 40mm thick and with a 25mm fan that makes it 65mm... i dont know if thats too thick for that case by the time it reaches the mobo or not.. the EX is 35.5mm thick which with a 25mm fan puts it at 60.5mm... i read that there is 60mm of space from top of case to top of mobo.. i dont know if thats exactly true or not... but at the same time im kinda interested in the 280mm radiator EX.. its 36mm thick... but more surface area... i really need to know this cases limitations for mounting at the top inside of case.. i've been googling for days and cant really find my answer so i'm coming here... if there are any better kits i should be looking at let me know...

looks wise if the AX 240 will fit i'm thinking about not getting the kit and buying separate... cuz i'm going to buy either red or orange uv hoses anyway... but this is radiator i really want to match the case

http://www.frozencpu.com/products/2...Aluminum_Enclosure_-_White.html?tl=g30c95s160

please help...

i am getting the asus z87 formula motherboard

Have a look here.

Edit: Also, if you haven't purchased the case, I would look at something like this (+ 15% off w/ promo code PAXEGAME15, ends 4/11) since its within its price range and is white with a much better design imho. Great for air, water cooling and cable management.