Hi Mat...welcome to the club!
I can only offer one bit of advice, be aware of the Police (or not, as the case may be) stopping you on false pretenses.
See this link: https://www.gov.uk/foreign-travel-advice/spain/safety-and-security
This has been a problem for a few years now but hopefully, the have started sorting it out as they realise the true value of tourism.
Safe trip and enjoy the drive!
Best Regards Trevor - Admin