Are fund of funds worth having? Specifically Vanguard LifeStrategy Conservative Growth, which has 28% Vanguard Total Stock Market Index and 12% Vanguard Total International Stock Market Index and 60%Vanguard Total Bond Market II Index Fund. Or would it be better to go with 40% 500 Vanguard index fund and 60% a total bond fund. I want to allocate 40%-60%. Also, thought about the Vanguard Wellesley Income Fund Admiral as an only fund because it keeps 40-60 allocation. All seem low cost.