I would strongly advise against going July/August unless you are stuck with these dates - best time to go is beginning of November, not only are prices a lot lower then (Brits stop going end of October and the Americans do not really start until after Thanksgiving - towards the end of November,last week in October you will probably find some very cheap flights out), but the weather is normally a lot better,July/August normally being Thundery in the afternoon.
I've just been thinking about this, both the US and South Spain will be very hot in the July/August period.
I'm keen to get the PPL training in ASAP as I'm keen to carry on my training after the PPL in September/October.