[timgr]

Works now. Thanks for the revision.

My thoughts - plan 1 is the best. Use the 10.5' mast and move everything up 3.5'. Why is the DB4e on the bottom? On my mast, I put the preamp on the mast between the two antennae and used roughly the same lead length for each. I might put the yagi on top if I was targeting KPTS - but I think you will get it anyway with the DB4e at the high spot.

Taking the mast to the ground in plan 2 does not do much, other than optionally bringing your mast ground down to ground level. The eave mount and secondary bracket will easily hold those antennae.

I see two issues with plan 3. First, the preamp is most effective when the antennae are right there by the preamp. The extra cable between the preamp and the DB4e doesn't help, although it's probably not going to make a lot of difference. Having the antennas separated also complicates the mast grounding effort. If you want to ground both masts with a single wire, ideally it should be an unbroken wire from the furthest mast to the building ground. I would only consider this configuration if the aim of the DB4e were significantly different from the yagi, and obstructions were fewer for each direction at the separated locations.