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I'll stake whatever I have on Arbiturm at first

Depending on the APR for Arb staking I may decide to powerdown a bit

I have a similar plan. I stopped staking $LEO and whatever I buy will be moved to arbitrum for staking. Already staked 1700 $LEO on arb.
I really want to reach the 50k LEO power though so I might be buying $LEO with my staking rewards on ARB and move to HE later on.

Yea that's pretty much what I'm thinking too!

Moving to arbitrum.

all of it? You do not leave yourself Leo power?
I would not underestimate the power of curation rewards.