Having worked for a financial company for years, my advice is to stay away from all the "Freedom Funds" offered. They're a new way for Fidelity to justify charging a higher management fee on those particular funds. That extra 1% or so a year is great for making the company money; it will kill your rate of return over the next 25+ years you're putting money into your retirement account. All these funds do is change the percentage of your funds in stocks vs. more fixed investments (bonds, etc.) so you have a higher percentage in stocks while you're young and slowly move the percentage more towards fixed as you get older. If you take a few hours every 5 years to re-balance your portfolio and just slowly shift more money towards fixed investments, you'll achieve the same thing WITHOUT the extra annual fee.
So how much difference are we talking here? Let's do a quick example. Based on your salary of $70k and a 4% match by your company, you'll have $5,600 a year to put in your 401(k) (your 4% plus matched 4%). I'll also assume an 8% annual return for both funds. Here is what that 1% extra service charge will cost you:
Fund with a 1% service charge:
Annual Fee Paid Year 1 - $60.00
Annual Fee Paid Year 25 (assuming 8% growth in assets) - $301.00
Total Fees Year 1 through 25: $3,782
Fund with a 2% service charge:
Annual Fee Paid Year 1 - $121.00
Annual Fee Paid Year 25 (assuming 8% growth in assets) - $472.00
Total Fees Year 1 through 25: $6,489
That's a total of $2,707 in extra fees over 25 years on just the investment you make this year! Next year if you invest the same amount in your 401k that will be another $2,707 paid over 25 years to the management company. This pattern repeats EACH year you pay the higher management fee. Trust me, if you invest that money in stock instead of paying it as fees, you'll have a whole lot more money saved when it's time to retire.
My advice, pick a percentage you're comfortable with in stocks at your age, maybe 85 - 90%, and pick the stock funds with the lowest management fees (the remaining 10 - 15% should go into a fixed fund). Make sure you pick at least some of your stock money, I do 20 - 25%, and select a diverse (lots of different countries) international fund.
For any retirement money you plan to save above the 4% getting matched by your company, set up a Roth IRA. That will give you the freedom to invest in any stocks or funds you want. Find some low-cost index funds (such as VTI for stocks, and BND for bonds) and put your money in those. Invest the same amount every month, automatically, and your cost average will work itself out through up markets and down.