assuming you're a good writer of course. None of those looks particularly difficult (boring, maybe). I took 21 units and worked part time, and i found the main issue not keeping up with classes and what not but since 12 of those were psych upper division classes having midterms every single week. I slept through pretty much 3 weeks of ochem lol
you'll likely sacrifice some of the reading though, but it's not like any class have any particularly effective way to enforce reading everything assigned