INVESTING STRATEGY

Hi Pearlers, Am looking to start an aggressive portfolio with 200K. I like the idea of having some control over the holding and country based weights over a single global ETF like a VDHG or DHHF. I have a 10-15year time horizon and am extremally bullish on Tech and Healthcare and accept the overlap and heavier weighting from the below ETF's in these sectors. Is 12 ETF's too many? Is there more effective wrapper/s to achieve the below? Core: Vanguard Aus Shares Indext ETF (VAS) - 30% - Australian Companies iShares S&P 500 ETF (IVV) - 20% - US Companies iShares S&P 500 Currency Hedged ETF (IHVV) - 20% - US Companies Vaneck MSCI Multifactor Em Markets (EMKT) - 5% - World emerging markets ishares Core Composite Bond ETF (IAF) - 4% - Aus Bonds BetaShares Aus High Interest Cash (AAA) - 2% - Aus High Interest Vanguard GLobal Aggregate Bond Index Hedged (VBND) - 4% - International Bonds Satelite: Global X FANG - (FANG) - Big US Tech - 3% Betashares Global Cyber Sec ETF - (HACK) - Cyber Security - 3% Betashares Global Healthcare - (Drug) - Healthcare - 3% Betashares Aus Resources Sector ETF (QRE) - Mining - 3% Betashares Asia Tech Tigers ETF - (ASIA) - Asia Tech - 3%