[dandruffhead]

I know this is kinda late, but I would go for 8GB RAM and 256GB if possible. 126GB is too little for me, I own rMBP 13" with 512GB (roughly 500GB free for storage), but even with that I have used 200GB. I don't store musics, pictures, etc. It is just my development folder. 256GB will give you more room to breath although you can just use external.

[nness]

I agree, 126GB is far too little the moment you have to start using a virtual machine for anything. Suddenly your options are to swap appliances (if using more than one) or try and run from an external drive. Both aren't fantastic options...

[NoahBuscher]

Do you have any experience running a VM from an external drive? Is there a significant speed decrease from an internal SSD?

[NoahBuscher]

The order already shipped, but I have an array of flash drives and most of my files are online.