Received several million—how would you invest it using the Boglehead approach?

Received several million—how would you invest it using the Boglehead approach? I recently received several million dollars in cash. Right now it’s all parked in a money market fund while I figure out how I want to invest it. I’ve been reading about the Boglehead philosophy and that’s most likely the direction I want to go. I want something simple, diversified and easy to manage long term. I don’t really want a financial advisor because I don’t think it’s necessary, and I don’t want the fees dragging on the portfolio every year. I’m not planning to withdraw from the portfolio anytime soon, so I have a long time horizon. I want growth, but capital preservation is also important to me. I could handle a market drop without selling, although watching a large amount disappear on paper would obviously be uncomfortable. I’m trying to figure out two things: Would you invest everything according to your target allocation at once, or spread it out over 6–12 months? I know lump sum usually wins on paper, but putting this much into the market all at once is difficult psychologically. What funds and percentages would you use? I’ve been looking at VTI, VXUS and either Treasuries or BND, but I’m unsure about the allocation. Would something like 50% VTI, 20% VXUS and 30% Treasuries make sense, or would you structure it differently? I’m not trying to chase the highest possible returns or overcomplicate this. I want reasonable long-term growth, protection against making a major mistake and a portfolio I can stick with. What allocation would you recommend, and how would you actually deploy the money?