Does it make sense to split the coins into multiple adresses?
So if you have 3000 coins to make 6 adresses with 500 coins each? Or 3 adresses with 1000 coins each?
Or is there no difference?
Splitting into multiple addresses makes no sense for staking, but if you enable coin control in the settings, you can see the coin pile sizes. It might make sense to split a huge pile into smaller piles, or combine multiple small ones. Currently, the "ideal" pile size for staking is around 800 PHR:
https://chainz.cryptoid.info/phr/#!extraction
EDIT: might need to copy paste the URL, the ! is throwing off Chrome...