Queries regarding Polygon-edge validators,mainnet & Transaction Batching

[SYSADMGARG]

Hi @laviniat1996
Hope you're doing well.

Today my motive to be here is i've queries to you.Hope you can help me on this:

*First is i wanted to know how to be a validator for my running polygon-edge network and can i perform this from my local machine.Is there any fund staking for the user to be as a validator for my chain.
*Second is how can i upgrade my running testnet polygon-edge based to mainnet.What exactly is the difference between to of us(Meant to say changes which differ from testnet in mainnet)
*And the last one is how can i batch my transactions from my chain to ethereum main chain.

That's all

Thanks