Is this the entire amount you are investing? Quick math is $150 per month starting at $0, and standard 7% return per year, you would be investing for about 17 years before your dividends equal your deposit. Basing this on 3% dividends, but not sure what dividend aristocrats average. Google "investment calculator" to run numbers. You should read the links below and make sure you've covered every other avenue before just using a taxable account.

https://www.reddit.com/r/personalfinance/wiki/commontopics/

https://www.reddit.com/r/personalfinance/wiki/windfall/