Wow... Looks like you have received lots of good advice already!
Here's my two bits...
When we got our kitten, we were living together in bachelor suite (just one big room, and a bathroom), that was really too small for two people, much less two people and a crazy new kitten!
We had tons of wires (my boyfriend is big into electronics), a gas stove, glass tables, a new(ish) couch, a toilet for swimming in, and much,much more! Our apartment was not cat-proofed in the least, but we learned what she got into and quickly removed it. The wires were the most tempting, but we'd let her explore under our watchful eye. A soft but stern "Don't even think about it" would deter any attempts at chewing.
And yes, she'd get the 2am crazies and blitz around the apartment, bouncing off the curtain that separated our bed from the rest of our house. I was sure I'd have to kill her
but she eventually calmed down and stopped.
It really is key to play with them when you get the chance, or set up some things that they can amuse themselves with. Tak loves her little stuffed mousies, and carries them around everywhere.
She's three now and has just started calming down enough at night to sleep on the bed with us. So you have a long time coming before that happens!
And, no, don't get another kitten. It sounds like you are just getting used to the one you have and you certainly don't need two!