ok, so bitcoin core is the way to go because it is the most secure? - does it have lower fees too?
So, how do you go about building your mining rewards up to about 10-15 on your profile before consolidating one larger payment to your wallet address?
Electrum is secure. It just is only a wallet.
You cannot, as yet, build up your mining rewards in your Kano.is user account. I send my mining rewards to one btc address, when they get to be 10-15 rewards I send them to a second address. I let those build up to about 1 btc or so, and then I send them to a different address or to coinbase or cex.io to sell.