I'm starting to be a fan of Expansion Model Beekeeping which basically says, if you want 2 hives you should probably go in to winter with 4 hives. Much easier to reduce in spring rather than trying to play catch-up and expand.
Ideally, you'd expand by catching swarms. Splitting is another way to expand. It's another way to get a yield off of a hive.
My project thread Agriculture collects solar energy two-dimensionally; but silviculture collects it three dimensionally.