We too went with CAM and found them very helpful, Maria set up a current account by e-mail, which allows us to transfer funds before we go over, although we have to go to the branch to get the internet access open. We are doing everything by e-mail even the Mortgage, and hope its all arranged by the time we go to sign Title deeds in week starting 12th Nov. The info they need for the Mortgage is much simpler than home; Passports scanned, copy of purchase agreement, credit check document from a credit search company, utility bill, copy of existing mortgage payments, thats al that comes to mind but Maria will send you a list the required dicuments.
Insurance; - Polaris sent an e-mail suggesting an insurance company (Zurich) who quoted approx 250 euro , this included buildings and contents and public liability (if you intend to rent). I am sure there are better offers than this but without recommendation from someone its hard to judge. Perhaps someone has some idea from Mar Menor or Le Torre.