There are times and places when bonds over performed the stock market, and the stock market was negative over 30 years. America has had the best stock market returns in history due to coming out on top in multiple, risky situations like WW2 and the Cuban Missile Crisis, in which we got lucky and investors were rewarded. I think that it is unwise to guess that the future will mirror the past for stock returns, and we will only know the best portfolio to have in hindsight. Obviously talking to a financial advisor is the best idea, but you have to make sure that your decision to pay off the home early is compared to making regular payments and investing the difference.
I personally thinking being debt free on a house feels the best and gives the best freedom. Your primary residence is your most protected asset. For example, you have a big medical bill and lose everything--they probably won't get your paid off house. If you retire with nothing but social security and a paid off house, you'll probably be alright. If you choose not to pay off the house but then spend, instead of invest, the money you'd have been better off paying off the house.
If CNBC tricks you into selling stocks at the wrong time and meddling with your investments or dabbling in market timing, you're better off paying off the house. CNBC only needs to trick you once in 30 years to really fuck you.
If I were you, I'd talk to an advisor, especially when dealing with that much money. It is worth a couple hundred bucks to know what they think, so long as you get a good guy.