yea that's max psi. they only put the max on. you'll need a floor pump to get the pressure up. you think it's fast now? wait til you pump the tyres up!
get used to your bike and then get the spd pedals back on. it takes a couple of months to be completely at ease with them, but you just need to remember that when you unclip, the foot that you unclip needs to be at the 12 o'clock position when you stop, then you will put the correct foot down!
once you get used to your spd's there is no turning back. when i rode my mtb back from the shop the other day, i must have tried to unclip every time i stopped. because i didn't need to, and because of the wide flat pedal, my foot didn't easily come off the pedal (like it does when you unclip) and i nearly went arse over tit a few times and scraped my leg down the pedal each time

i wanted flat pedals on it so i can teach on it, but i might have to get those ones that double as a flat and as an spd. i also realised that cycling with flat pedals is way harder, my foot kept slipping and i didn't realise just how much you use the upstroke when you are clipped in. i just didn't feel as if me and the bike were "one". it felt totally alien.