if ya cooler is that big then your cooler wont be an issue! that will easily cool the heat generated by pressuring the intake to a pretty extreme level, so things you should be thinking about are:
- AFRs - can the pump, injector and current tune (also any timing advancing) deliver the required fuel and give good ratios?
- engines internals - i doubt they'd have a problem, so long as the above is kept safe
- is the clutch and gearbox gonna hold up ok?
personally i don't see a problem with running 14psi assuming the fuel system is in good order, spiking a little higher is not too bad either to give that "kick in the back" feeling. it's your call though, and if you're worried maybe u should throw a good boost controller on, a fuel pressure regulator and throw it on a dyno to ensure the AFRs are safe.