Your proposal is fine. Personally, I wouldn't do the REIT as it's already in VSTSX. How much would you have invested in total? I tend to say that if it's less than $100k, don't even look at diversification. Put it all in US equity at low cost and be done with it until you exceed the $100k mark. Then think about what you want to do. Write down an investment statement of exactly what you plan to do, when to change % and stick to it.