Have 100K to invest. My financial advisor is asking to go with SMA. Is SMA the right choice?

I have decided to hire a financial advisor. He came highly recommended by my tax advisor. Currently, my portfolio is highly concentrated in my employer stocks. I want to start diversifying. As a first step, sold 100K worth of my company shares. My financial advisor is recommending investing in a growth oriented Separately Managed Account that tracks Russell 3000 Growth index. My investment style is aggressive, with appetitive for risk up to an extent that does't include cryptos and NFTs.

My question is, Is SMAs the right approach? The fund he suggested, doesn't even beat the Russell 3000 index when comparing net/tax adjusted return and the gross return is almost the same as the index. If not, what would be your ideal portfolio for initial 100K seed? I'm looking for suggestions before going down this path. Thanks in advance for your time and insight!