The first thing to do, right now, is increase contributions! If your 25, you still have lots of control and time over posturing to retire at age 55 (or earlier) instead of 65. The ultimate goal should be to be able to retire when you want to retire, and not having to significantly factor in the pension portion of FERS or 'wait' for the paltry $25k vera/vsips (which at full career maturity is only a few months of pay!). I was hesitant, but the easiest way to increase contributions is to tick them up by 1% get used to having less money, and keep repeating that until you get it somewhere substantial.
Find a premade retirement saving planning calculator spreadsheet - punch in what you have now, what you plan to contribute throughout your career as your wages grow and some estimate rate of returns to establish expectation bounds. It will show you what your savings will be at various ages of life, and should alone will help entice you to increase contributions.
Also, I wouldn't put anything in G at the age of 25. Keep that money active in the 3 main funds (you can park contributions in G that way you aren't blindly bleeding away contribution money in the event shares are bought during a market sell off, then just move it when everything else is moved during an EFT), and somewhat low risk F fund. Take advantage of your 2 ETFs per month!