Are you studying full-time after you finish your courses next week and before you start work? Or are you using the months between for a break/vacation before work starts?
If you're studying full-time, you should be able to easily do a test each in July and August, and maybe more than that. Many people start with FAR since it's considered to have the most material – if you started studying it next week and tested at the end of July, that'd be a little over a month to study for it, which should be good being fresh out of school and studying full-time. Then you'll have about 6 weeks left to study prior to the end of the testing window and the start of your new job. If you wanted to be ambitious, you could knock out 2 tests in that time, or to keep an easier schedule, you could plan for 1 more test in that time. REG is often considered the next-biggest after FAR, so would be a good one to do after FAR and before your job starts, since you'll have full-time study to devote to it, then you can decide whether to fit BEC in too or not.
If you're wanting to just study part-time, then you'll have to decide how much part-time you're willing to do and how many exams that can accommodate. Recommendations for study time are usually in the 150-200 hours per exam range, though some people need more and some less, so figure out how many hours a week you're willing to devote to study and plan accordingly (FAR needing the top end of the range; BEC more like 100 hours for the average student).
However, before getting too concerned with exactly when to take each exam, you definitely need to figure out what's required to get your application processed through your state for getting approved to sit for the exams. If that requires a transcript showing all 150 credits, then find out from your school how soon you'll be able to get a final transcript, and try to find out how quickly you'll get an NTS after getting the transcript and application in to the state board. If you're looking at 8 weeks from now till you get your NTS, and then having to schedule at least 2-3 weeks out to find an open spot to test, then you'll have less testing opportunities than if you can apply now, be approved a week later, and still easily get a spot scheduled in July.
As for study materials, look up samples of all of them and see which ones you learn best from. Also consider whether you learn better from books, lectures, etc., and make sure the review course you get has the learning materials you need. Like, for me, I learn better from books than lectures, so comparing lecture samples didn't matter, but having a really good book was essentially. Thankfully, books are also cheaper than lectures, so I got to be a tightwad and learn at the same time. 😀 But finding the review materials that you personally learn best from is the most important thing.
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