I intend to sweep funds from a paper-wallet and other funds from an old BRD-wallet (12 words known) into Electrum (preinstalled on Tails).
You can sweep your paper wallet private keys but for your BRD wallet you need to either open it and send the coin to your Electrum wallet or import its seed into Electrum.
I don't know which address-type to use ?
Send to the first one starting with
bc1q (native segwit) since it's the most common format and it's supported by almost all wallets.
Sometimes in the future I will be required to show simple Bitcoin tasks to an audience. That means a transaction (of about 5 USD) to a
person of the audience should be confirmed withhin about 5-10 minutes.
As other members suggested, check mempool.space to have an idea on what fee rate to set for high priority confirmation (Electrum also has a decent fee estimator) but your transaction may take more than 10 min to get confirmed.
If you are doing this for testing purposes or just to explain to your audience how bitcoin works, you may use the test network.