Some more staking questions!

Hello, so I currently am deciding on how/where to stake my eth and future eth purchases and narrowed it down to the following 3 options:

​

1) Stake on lido via ledger nano x

- this option seems pretty easy since I can use ledger live and do it all through there. I understand the cons of using closed source software and would mitigate some risk by spreading out my crypto on different hardware wallets that are not closed source. My question here would be - what are the fees typically associated with staking my eth/converting it to stETH? and back? I know that people say that it depends on gas fees of the network but is there a way for me to estimate say how much it would cost to stake 3-5 eth right now? And in the future I assume I would incur the same gas fees for converting stETH back to eth?

​

2) stake on rocket pool

- From what I understand, I can do this using both the ledger and trezor but I have to potentially go through metamask? Or I can purchase the liquid token on an exchange and transfer it to my wallet? I'm trying to do this without incurring too many gas fees overall - which of the above options would be the best? I assume the fees to convert to rETH and back are the same as going from eth to stETH and back?

​

3) Stake on coinbase - this one is the least likely option for me to take IMO, since they take 25% of your earnings? Do they at least not charge any fees for staking/unstaking? Any mandetory lockup period? Just really asking to learn more about the process - but I would heavily prefer option 1 or 2.

​

thanks!