First, do you know enough about mutual funds? If no, you should seek the help of a mutual fund advisor. Only an advisor near you would be able to offer you personal advice after noting down your personal details. Do not take investment or tax planning decisions in isolation.
Moderate long-term investors are typically asked to invest in flexi cap funds. However, you should remember that these funds invest across market capitalisations and sectors and they are risky. Make sure that you are okay with the extra risk. If you are uncomfortable with the extra risk, stick to large cap or aggressive hybrid schemes.