If you have cash in a 401( k) from a past company, you're most likely wondering what you should finish with it. You have four choices: Keep it in your previous company's strategy, roll it over to your existing employer's plan, roll it over into an IRA, or money it out. While your decision must be based upon your own special circumstances, there are 3 key factors to consider to keep in mind when determining which choice is right for you: – Costs – Access to your cash – Financial investment options…