Flexi-cap, mid-cap, small-cap and gold ETF. Is this a balanced mutual fund portfolio for young investors?

A 22-year-old investor sought advice on optimising her mutual fund portfolio for long-term wealth creation. Expert Harshvardhan Roongta of Roongta Securities recommended maintaining a balanced mix, limiting fund overlap, keeping 10–15% in gold, and targeting 12% returns to potentially build Rs 45–46 lakh in 10 years.