I didn't know this, but you can level up to max and get all the gear in a day!!! I think someone was misquoted on this. Stormshade said that with a six pack of red bull you can do the same in a weekend.
Yeah, I'm sure that was a misquote. However, you could probably ramp up pretty fast using xp from the Duty Officer assignments in addition to completing regular missions. I run 21 to 23 DOFF assignments concurrently and draw a lot of xp from that.