I have the goal of purchasing my first home within the next ...

I have the goal of purchasing my first home within the next year - because of this short term I think a lower risk portfolio would be more suitable.
My current strategy:
invest 75% in high yielding dividend ETFs (i.e. $VANGUARD FTSE CDN HIGH DIVID YIELD TRUST UNIT (VDY.CA)$ ) so that I have low risk and am growing my portfolio from dividends
gamble 2% on an individual stock
invest the remaining 23% in higher growth ETFs (i.e. $VANGUARD S&P 500 INDEX ETF TR UNIT (VFV.CA)$ or $ISHARES CORE EQUITY ETF PORTFOLIO UNITS CAD (XEQT.CA)$ )
Would this be a good strategy for my goal? If not, what should I change? Any suggestions on high yielding dividend ETFs/high growth ETFs/individual stocks I should invest in besides the ones mentioned?