How should I split my Roth IRA between VTI and QQQ?

I’m 22 and trying to get more serious about investing. I have about $1,600 saved right now and I’m thinking about putting around $1,200 into my Roth IRA and keeping the other $400 for myself. I’m mainly looking at VTI and QQQ. I was thinking maybe 70% VTI and 30% QQQ, but I’m not sure if that’s a good split. If I max out my Roth IRA every year, would you guys recommend sticking with something like 70/30, or putting more into VTI? I know there’s a lot of overlap between the two, so I’m wondering

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