...
intermediate bond fund- .21%
Balanced fund-.42%
Russell 3000 Index fund-.06%
...
Two reasons to avoid the balanced fund: you can make your own, cheaper; and you might not agree with a 50% bond allocation common in many balanced funds. My guess is you should be closer to 20% bonds (or 0% if you're very aggressive, and 30% if you're very conservative about stock losses).
But here's how to make your own, cheaper:
Russell 3000 Index fund: this is a total market fund. It has a low 0.06% expense, and holds every stock in proportion to it's market weight (or "market cap"). It has very low turnover, too - passive funds don't waste money guessing.
Intermediate bond fund: that's a fund with roughly 5 year bonds (some less, some more, but near 5 years). That tends to give a good balance between time and other factors. The expense ratio of 0.11% is very good, as well.
Without more detail on the "fixed income fund", I'd favor the intermediate bond fund. But at a 0.11% expense ratio, it's not a bad choice - just lacks information. So overall, pick a percent stocks... try the total stock fund. Put the remaining percentage in the intermediate bond fund. Your expense ratio will drop from 0.42% to less than 0.08%, saving you money each year.
