Why are you going from 90% stock to 25% stock? Thats a huge swing. If you are 14 years out I get being 80%+ on the stocks, but a 75% bond portfolio is very conservative. I use a 80% bond/20% stock fund as my emergency fund. Its that conservative!
I like the Vanguard Total index funds, and fund selection is important. However your ratio of stocks to bonds has a bigger impact on your returns than just about anything else. So making sure that is geared towards your long term goals should be priority #1, then worry about which funds to pick.
Why not?
56% Total Stock
24% Total International Stock
20% Total Bond.
80% stocks(70/30 domestic/international), 20% bonds. A small drop from your current 90% stock, but it still makes sense for someone 14 years from retirement.