Buy MSFT by Jun 11, 2029.

I bought in to MSFT at $409 and I'm averaging down with the current dip. I'm holding for at least three years because the most optimistic forecasts are around $800 and the worst bear cases see a drop down to $350ish. I'm going to keep buying but haven't decided on any kind of ceiling or limit order. Curious if anyone has a limit for MSFT and why they're choosing that number.