#1 Point - YOUR HAIR IS ON FIRE!!!! (I paid off 110k in Student Loans in two years after graduating at age 26 as a preface)
http://www.mrmoneymustache.com/2012/04/18/news-flash-your-debt-is-an-emergency/Health Insurance: Switch to HDHP immediately if you are not in one already.
Cellphone: As soon as you are off contract (or sooner depending on ETF) find a cheap solution, most seem to recommend Ting or Republican Wireless.
Internet: Call comcast and ask for retentions department to get an introductory deal, I pay $35/month for 50mbps down and I call them every year to get introductory rate.
Electric: Too high, especially when you don't even do laundry. See
http://www.mrmoneymustache.com/2011/05/10/ill-show-you-my-electricity-bill-if-you-show-me-yours/Student Loan: Start tackling that 8.75% IMMEDIATELY AND AGGRESSIVELY.
Car Insurance: Shop around every 6 months, currently I pay about $40.
Mutual Fund Contribution: Cut it until your hair is less ablaze, unless it is company matched.
Groceries: Can probably trim a good amount (eat less meat, shop for best prices).
http://www.mrmoneymustache.com/2012/03/29/killing-your-1000-grocery-bill/Gas: Stop driving 1.7 miles to the train stop. Get a damn bike and use it every day, stop being lazy.
Car: In fact consider ditching your car entirely if your are really committed. I went carless for 1.5 years after graduation. ZipCar/Car2Go/RelayRides are great options for sporadic car use.
Train Commute: Perfect, don't change.
Entertainment allowance: WTH, YOUR HAIR IS ON FIRE!!! Drink at home if you have to, don't pay for drinks at a bar/club ever.
Laundry: Find a friend, line dry most items, only wash clothes when stinky/dirty, etc...
Variable Monthly: $450?!?!?! Re: YOUR HAIR IS ON FIRE. Serious note, you need to itemize better if you want more detailed help.
It will be hard, but it sounds like you have your dream in mind and aren't a few small sacrifices worth living your dream as quickly as possible! :)