how do you currently use what you have?
From what you list, you have 3 similar controllers, 3 audio interfaces, and 2 midi interfaces.
if you keep the axiom 25 and the presonus, you could get rid of the kb37 and the ozonic.
if you have external midi gear you don't mention, you can always get an inexpensive usb/midi cable.
i like more keys than 25, so if it were me, i might even get rid of the axiom 25 and get an axiom 49.
HP Pavillion DV7T-3300 Laptop | i7 Q720 @ 1.6 GHz | 4GB RAM | Win7 Pro 64-bit
m-audio Axiom Pro 61 keyboard controller || iPad2 | RetouchControl DUO | TouchOSC | LoopBe30 MIDI
m-audio Mobile Pre USB (original) audio interface | ASIO4ALL || RØDE NT-3 mic
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