Looking for advice

Hey everyone, new to trading and anything stock related, I’ve been learning as much as I can and I’m still so lost but I understand the first thing I have to do is start.

I’m 20 going into my junior year of college, I pay around $900 in rent and other bills, about $1000 a month goes towards tuition and then I have regular living expenses. I make around $1000 a week with my job. I think I’m going to start putting $200 a week into UTLY and reinvesting those dividends back in and watching it grow over 5/6 years, want to open that when I’m ready to buy a house or start a family. Once I graduate in 2 years I want to open a retirement plan then using what I’ve learned from the past 2 years. Am I naive? Is UTLY to risky to invest in and should I diversify more?