Hose Reels psi

Hi, im about to start upgrading my current equipment a little bit. i think the biggest thing i need right now is hose reels for my pressure hose and garden hose. im thinking of getting 300 feet pressure hose and 150 feet garden hose. are these good lengths? also this may be a dumb question but my machine is 4000 psi so is it okay to get a reel with max psi 4000 or should i get 5000 to be safe?

thanks