With so many feeders and flowers, even though they are quite brave, you may find they just go to the ones you aren't near.
I'd be tempted to remove all the nearby hanging baskets and feeders but one, then camp out near it. Pick one that has a nice background, maybe that tree with the red foliage behind the BBQ (make some test shots before doing any of the work!). Even better, you could remove this feeder as well but hang a branch of one of those hanging baskets with the long trumpet shaped flower. By limiting their food supply, you'll control where they go and you can wait nearby ready with the camera.
Replace everything when you're done. It might be best to do this when the wife is away as some people might consider temporarily removing the hummingbirds food to control them as mean, but frankly the little freeloaders owe you a bit of cooperative modelling time in front of the camera.
---------- Post added 06-06-16 at 07:55 AM ----------
Originally posted by ohaya Would it be better to have her maybe add some plants with foliage ABOVE the hangling baskets, so that they were hidden from view from above (we have various predators around here, like owls, and lately, sometimes, turkey buzzards and maybe hawks?)?
Generally, no. Most feeder birds like to have a wide view when they're eating so they can spot danger during these vulnerable moments. They do like bushes around the yard where they can hide in and wait for the coast to be clear before heading out to the feeder (you seem to have ample nearby cover
).