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First off, what are you trying to accomplish in raisng your FICO score. If you are behind in your mortgage payments or credit card payments, recent lates will mute any pay down of CC debt. An IRA loan will require payment back right away if you loose your job so I would be carefull if you go that road.
Before resorting to taking money out of your IRA, you should understand the full impact of this action. You should cut all spending that isnt reall needed and if there still isnt enough money, I would get the second job. I would not do a home business.