Is attempting to
approximate the total stock market worth the effort if you don't have access to VTSAX or similar?
My job's 457 has access to the following:
Vanguard Institutional Index Fund - Institutional Shares, VINIX, 0.04% ER
Vanguard Extended Market Index Fund - Institutional Shares, VIEIX, 0.08% ER
Vanguard Small-Cap Index Fund - Admiral Shares, VSMAX, 0.09% ER
I'm currently only in VINIX for my US equities. According to the linked article, I should go 81% VINIX and 19% VIEIX to approximate the total stock market. I could also go 82% VINIX / 18% VSMAX, but VSMAX is less diversified and has a higher ER than VIEIX. If I'm doing one or the other, it will be the former. Would you bother to approximate, or stick with VINIX alone? Why or why not?