I have a Macbook Pro, 1973 Marshall JMP Super Lead (with "Dookie mod" by Martin Golub) and a Marshall 1960BV with 4 12" Scumback Speakers BM75's.

This video will give you an idea of what it sounds like:

http://www.youtube.com/watch?v=ltng8tB7U0o

And I've got a lot of VSTs and effects that I've collected since I was pretty young. Now I just need a dynamic mic and a cardioid mic to mic up the cab, monitors that I'll be able to mix and master on,

I'M HUGE FANS OF THESE MIXES AND SONGS:

http://www.youtube.com/watch?v=sOy7MsL9WtY

http://www.youtube.com/watch?v=cn_FcRnEozQ

I want my mixes to be just like theirs. I'll be mixing in a small room. And I'll need acoustic panels. I'm thinking I'll mount GIKs on my walls unless other people tell me to do otherwise.

I'll need an audio interface too!

I want to spend around $1000 on monitors. Please toss out your ideas.

My Macbook Pro has 2.8GHz Quad-core Intel Core i7, Turbo Boost up to 3.8GHz, 16GB 1600MHz DDR3L SDRAM, 512GB Flash Storage.

Thank you.

All of it will be "in the box" except for the vocals and guitar.

Nobody?

An audio interface, monitors, acoustic panels...
It looks like you have very good ideas already