If you are flying into and out of Malaga why not stay there? Are there no rooms to be had in Malaga? Here's just a few
http://www.andalucia2.com/malagaloja.html It would be so much easier for you. There is a bus that goes after the match at 24.00 which gets you back to Malaga at 03.15, or alternatively you lot will all be celebrating :p throughout the night anyway, so book onto the 07.00 and that gets you in at 10.15 or so. Costs you 13 Euros each way more or less. Find out more here
https://www.continental-auto.es/continental/compra.php Probably need someone who speaks a bit of Spanish if you don't, as it is a bit complex
However, you can even book which seat you want online and yes, I've just checked and there are seats available on both buses at the moment.
Enjoy the game, I will