Does your wife work(have earned income)? Does she have a work plan she can contribute to?
If not, have you maxed out your's?
If not, then there is not much of a benefit to doing it seperately, unless she is older.
While there are ton's of opinion's if you plan to invest long-term, over 5 years, then just use a No Load Fund family and start with an S&P 500 index fund. Once you get $10k, then diversify properly, most Mutual Fund's can help you determine that mix.
Feel free to PM if you are actually interested in more info. I am a Commercial Loan Officer today and don't sell investments, but I spent 8 years as a Licensed Investment Advisor from 1998 to 2005, so I can help.
PS Any savings or CD is earning less than the rate of inflation so you will actually lole ground, and bonds will go down if interest rates head back up, and they are at historical lows, so beware trying to go the "safe" route.