COLDCARD questions


Just received my new COLDCARD MK4 from Coinkite. I plan to move all my funds to it, but I have a few questions:

  1. What is a better and more user friendly software wallet to use with the COLDCARD (I'm looking at Sparrow and Wasabi)?
  2. After the initial setup of the COLDCARD (PIN code, anti-phising words, mnemonic seed, etc) and after connecting it to my laptop, the software wallet that I will use will generate a wallet, located on my laptop somewhere. What if I delete the wallet file from my laptop or what if my laptop breaks and I can't recover the wallet file? Will I lose all my bitcoin?
  3. Is it a good idea to backup the wallet file on a USB drive or SD card for safer storage?
  4. Could you please recommend a good tutorial (video or anything) on the COLDCARD?

NOTE: I'm coming from Ledger, so please don't laugh at my questions. Thank you!