Aerial Survey needed in NorCal

Sorry for the broadcast nature of this, but hoping I can connect with someone quickly on this. I am eventually hoping to have aerial contour survey capabilities on my ArduPlane-equipped MyTwinDream, and/or a to-be-built multi-rotor running ArduCopter. But too many other work and RC interests in the way at present. Is there someone out there within reasonable distance of Napa Valley California that would be able to fly a ~50 acre site and generate a reasonable contour survey? Good aerial imagery also of interest, but contours of greatest interest. Ground control points available shortly. Love where open source has taken us to date, and hoping to pay someone a fair fee for executing on what they’ve built/tuned/learned in this space.