Dave,
I ditto a lot of the same recommendations as @Tracy. I do think Hedyscepe and Ambositrae are fantastic growers in my area. Do they get “too big”….maybe. But you b will get many years of beauty before you need to worry about the power lines. They are an average grower, not like Archontophoenix that grow feet per year. I’d say plant away but know your previous Hedy or Ambo may require removal in 20yrs.
Pritchardia Minor, Bentinkia Condapanna, Pinanga Javana, and Hyophorbe Indica are all winners as well. You could also get away with planting a clumping Dypsis like Heteromorpha or Lanceolata as well. They don’t get massively tall (less than 20’) and are fantastic looking.
Subsidizing palms for Encephalartos is a winning combination. Some big Encephalartos like Whitelockii, Ituriensis, or Kisambo get very tall if kept upright. You’re talking decades before those would be a concern. HB is prime location for growing Encephalartos. All of mine seem very happy.
Cordyline, Plumeria, Heliconia etc all excel as companion plants.
My lot is fairly small @ 6500sqft so my gardens are cramped. I know without a doubt I will have to dig plants out as they mature but that’s ok. I knew the job when I took it. If I can get 20yrs out of a plant, I will be very happy. I completely understand I’m the outlier and not the rule though. HB is prime palm tree, cycad and tropical plant growing conditions. So many possibilities.
-dale
Bentinkia Condapanna
Pinanga Javana
Dypsis Ambositrae
Hyophorbe Indica