I'm having some cooling issues as discovered after going on track at FF, on track is fine temp sat at just under 90 degrees during the session but as soon as i got off it shot up to over 100 before i managed to switch the motor off

i'm currently using a pacet 14" pusher fan (i realise a puller would be more efficient but due to space restrictions a pusher is the only option)

i'm thinking of trying a Pacet heavy duty 16" pusher which will just fit on the rad, what i'm wondering is would 2 smaller fans be better? i think i would only be able to fit 2 10" fans though... looking at the CFM figures the 16" flows more 2354CFM compared to 2 x 10" fans at 2180CFM... is it as simple as that? what about surface area etc? whos good at this science stuff LOL or anyone got any practical experience?