Fan Placement in a Cupboard Propagator/Nursery?

I'm going to be building a small propagator/nursery setup in this small cupboard, designed to take four juniors.

http://www.argos.co.uk/static/Product/partNumber/6173113.htm

It will be diamond mylar lined and have 125w blue CFL and shade. I'm going to add intake and extract using two small inline fans that will be mastic mounted in the cupboard.

http://www.hydroponics.co.uk/eco-intake-fan.html

My question is, where to mount the fans in this closed cupboard? Sides, top, bottom? Any one got any similar situations?

Built! Placed intake fan low down on left - exhaust top right. Sounds a little like a hovercraft at the moment - SMSCOM fan controller ordered to slow them down a little.