After ready Jagoninvestor and other financial blogs I realized that I have done mistake by taking so many LIC policies. Now I would like to correct my mistakes with the help of Jagoinvestor Forum members suggestions. I have already taken term sufficient insurance.

I have following LIC policies

1. LIC Samridhu Plus: Started in April 2011. Premium amount is Rs. 2000 per month. Last premium date is March 2016.
2. LIC Jeevan Saral: Started in Arp 2011. Premium amount is Rs. 1000 per month. Last premium date is March 2046.
3. LIC Jeevan Saral: Started in Feb 2009. Premium amount is Rs. 1000 per month. Last premium date is March 2044.
4. LIC Market Plus I:  Started in Aug 2010. Premium amount is Rs. 1000 per month. Last premium date is Jul 2030.
5. LIC Wealth Plus: Started in Mar 2010. Single Premium of Rs, 40,000. Maturity date Mar 2018.
6. LIC Jeevan Aastha:  Started in Jan 2009. Single Premium of Rs.  24,810. Maturity date Jan 2019.
7. Couple of money back policies.

Please guide/suggest me

1. Should I surrender LIC Jeevan Saral?
2. Should I surrender LIC Samridhi Plus? Is this amount taxable?
3. Should I surrender LIC Market Plus I? Is this amount taxable?
4. Should I surrender single premium policies also?

Thanks in advance.