Some specific feedback on our proposed portfolio
Good choice on preferring passive index funds over actively managed funds.
The ones you named would make up a diversified portfolio.
US Total Stock Market
VOO tracks an indexed BM of the SPX 500 stocks at a low 0.07 ER. Anchoring your PF on USA total stock market is a good bet on 50/50 future performance at 10% per year.
VTI tracks an indexed BM for the "Total US Stock Markets" at a very low-cost 0.04 ER. You will have over 7,000 stocks working for/against you. This diversified your PF by tying it into the original anomalous market "factor" - market beta.
VUG tracks the "Growth" tranche of SPX at a very low-cost 0.04% ER. How much AUM you place here will "tilt" your PF toward growth companies - typically the upper half of the BM.
Watch Fed FFR decisions here. Lower interest rates may boost growth sectors. Higher will restrict the cost of borrowing to fund growth to future cash flows.
VGT tracks an indexed BM of the GISC IT sector at a very low-cost 0.04% ER. This tilts your PF even more toward a growth factor strategy.
EX-US Total Stock Markets
VXUS tracks a version of the total international market at a relatively low-cost 0.15 ER. (INTL funds always have higher fees because of the higher fees it takes to manage them.)
US Total Bond Markets
VYM tracks a version of the Bloomberg US bond index that covers the vast "fixed income" markets very well. This is a much easier way to diversify a PF than investing directly in bonds at a very low-cost 0.04% ER.
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My Ben Franklin Analysis is ...
+ You have "paid yourself first" by choosing to use low cost ETFs.
+ You have achieved a high degree of diversification.
? Now you need to allocate these assets to balance the returns -risk ratio to fit your risk tolerance.
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- You avoided VALUE stocks. Why? Your high return-low risk profile would support this.
- Your broad indexes water-down the overall QUALITY of your assets.
Regards,