You've had a lot of great input.....and, your plan is good. I would only add.....look at Vanguard Mid Cap index fund........it's slightly outperformed total stock and you don't have that much mid cap in your total stock index fund.....not more than 5% of the total. And, I'd keep the Reit.....pays healthy dividends, RE as a whole is in recovery and long term, you should do well......again, 5 to 10% of your investment.
I would average in over the next year or so.....remember "sell in May and go away"....doesn't mean we'll see a drop this year but averaging eliminates the big ivestment followed by the big drop......happended to me once...never again. And, you should have Vanguard do a financial analysis for you....on their portion and, maybe, they would do it on the whole account. I think you have enough that it would be free.....check with them. Good Luck!