Pick four stocks in four different sectors......with at least two providing a dividend yield of 3.2%............plus have some cash in a savings account with the highest interest rate you can find.
Find a real estate market that is ready to boom......housing, farmland, commericial, etc., etc.
You should definitely consult a tax pro. It's an impossible question to answer without more info and knowing your personal situation.
For the most part, traditional IRA's are better if you are looking for a tax deduction now and the Roth is better if you don't need the deduction now. It's not always that cut and dry though.
Check to see if you qualify for a Traditional IRA and/or Roth IRA. It is possible to qualify for both, they are not mutually exclusive, and if so, maybe contribute to both -- another form of "diversification". Check soon to see if you qualify for tax year 2007 because if you do you can still contribute up to April 15 for 2007.
What institution to use kinda depends on what you will be investing in (stocks vs. funds vs. cash) and how often you trade.