Apply to big companies now or wait for Google cool down?

My 1 year Google cool down finishes in 6 months. Current plan is to reinterview with Google at the end of the cool down and at the same time do a full frontal assault on most big tech companies (i.e. try and interview everywhere and hope I land an offer somewhere). Amazon apparently has a 6 month cool down. Also just saw an Apple Clang Team job where I actually fit the requirements. Should I try and interview with these companies (and maybe a few others) right now, or wait until April and do it all at once? I guess I'm afraid of, say I get an offer right now, that would be awesome but I'll never know if I would have made it into Google on my second try. If I fail Amazon I might be able to try again in 6 months when I do the others companies so no loss there.