I would suggest do not take limited pay, but if you want to do that anyways. Buy two term plans, 1 Cr each one with limited pay i.e. 15 yrs and the other till 60. Always buy insurance online, no agent. It is cheaper for the same product.
I am hoping you do have personal (not company 5L) Health insurance of 20L base sum assured.
Before buying the term plans please go through their terms & conditions fully.
Remember it is a term plan, it will be active only when you are not there(hoping it never happens), get the company that has an office near your home. I do not where you are staying, if Tier 1 city, then get any LIC, MaxLife, or HDFC life. but if it is a Tier 2 or Tier 3 cities, then do a bit of research.
Do not buy the policy with the Return of Premium option. This is a scam.
If you subtract the premium of the Return option and without the Return option and invest the amount as SIP in any medium cap Mutual Funds, you will get higher returns.