Tax liability question CA state income tax liability?

I was informed I have a tax liability of $20,000 for CA State Personal Income Tax. This is due to a house I sold back in 1991 and never paid capital gains tax. I know the statute of limitations for liability is 20 years. This is the 18th year. In have had no income for the past 5 years and no stable income for the past 18 years. no ets, I have personal student loans that I owe this coming 2010. I have been supported by my girlfriend for the past 15 years. should I start paying on installment plan (as suggested by CA ftb)? Or try and wait it out for two more years when the statute of limitations is up.