If your on a tight budget,you might consider doing your flying in the USA (Nothing wrong with OB.)/ or somewhere else.
Do remeber,the RT abroad is very different,so you may want to do your RT oral before you go,and stick to what you know,not learn bad habits.Also goes for joining methods / instructions.
I know for a fact you can get 1 hour for £100 in a C150 at EGKA..and remeber ,when you go solo,you don`t pay the instructor do you..thus saving £25 or so...
Good luck in however you choose to do it.