Hi Harry,

You could have a look google for property24 for an idea of rental costs. I'd allow about 3000php a month for electric so long as you don't go mad on the aircon, supplement it with a decent fan.
Cars are the same the world over, all depends on age and make, so anything from a 100,000 to over 5,000,000.
I'm sure some of the locals on this site will be able to give you a better idea on food etc, but there again will you cook yourself or if not what level of restaurant will you go to, and will you be alone?