Forget the states!! IMHO it's not worth the hassle. Why?:
1. Find a reputable school - there are a few dodgy ones.
2. Make sure it's still in one piece. Unfortunately a few were damaged in the recent bad weather.
3. Get an appointment at the US embassy.
4. Travel there, queue for ages then hand over cash for the 'honour'of entering their country to give them even more cash.
5. Fly there for~£400.
6. Finally start PPL and drink some beer at night - best bit.
7. Complete, fly home.
8. Pay for four or five dual hours familiarising with R/T and airspace here.
9. Get a fright when you see a cloud or rain shower.
From experience it ain't always cheaper abroad, indeed it very rarely is. I believe evil speaks the truth. With 35 left to do do it here. Living in the Highlands there is a lot of flying going on now. I would wager if you arrived at Inverness tomorrow you would be done in three weeks max. And you would have the same F/T instructor throughout.
Make it easy on yourself and get into the books now. I often see guys who are held back by not having the exams done as they are getting through the flying at such a pace.