SMO MYF

I was thinking of buying a plane to fly regularly between SMO (Santa
Monica) and MYF (Montgomery Airport, near San Diego), for instance a
Diamond DA20-A1, which can go about 104 knots. However, the flight
path includes both Pendleton and LAX (perhaps others), which
presumably could cause delays. Would anybody be able to tell me
roughly how long I could expect that to take, say from the time I get
out of my car at MYF to the time I'm in my car at SMO, and how they
came to those numbers?

Thanks!

M