building a new rig, will this setup work?
 

the parts:

AMS gtower
eheim 1250
1/2" ID tygon tubing
swiftech mcw5000 (p 4)
swiftech mcw50
Black Ice Extreme chrome
Black Ice Pro Chrome
4 panaflo's L1a 120 mm
DD clear res or Dtek bay res

I made a 120 mm blowhole on top of the case and i have cleared the 120 mm blowhole at the back of the case.
I have also made 2 120 mm blowholes on the sidepanel of the case.

I want to mount the black Ice Extreme on the top blowhole and the Black Ice pro on the blowhole at the back of the case.

My setup will be this :

Eheim-BIX-MCW5000-BI Pro-mcw50-res-eheim

In the near future i want use tecs for both the cpu en gpu.(reason for using 2 rads)

Will this setup work?and will the pump be strong enough for 2 rad's en 2 waterblocks

it might be cool with just one pump. some think you should use 2 pumps. I would use a large HC rather than 2 BL rads, cause the flow would be better through the system. However, you could use 2 pumps and 2 rads.

I can't use a lagrer heatercore, because it won't fit , the AMS case is an alu midtower, with the added bonus of a 120 mm blowhole at the back of the case.Cooltechnica use this case for their aquaXtreme barebones.

I don't want to use 2 pump if i don't have to.
i want one loop, not two.

In that case just go with the blx or get the hc from www.dtekhere . It'll probably do a little better than the blx. Either way if you can stay away from a lot of bends one rad is fine.

But will the second rad disturb the flowrate that much
(remember i will be using a very powerfull pump)

the eheim is actually not too powerful... you could get a danner mag drive 700 or something; that would probably provide better flow.

I agree. I wouldn't think the rad its self wouldn't kill flow rather any 90 elbows or sharp turns. The less of that the better. Good luck sounds like it'll be nice when finished ;)