Hello! Thanks for your questions. I'll answer in order.
(1) I can't tell whether you (or any one person) will be able to achieve a 700 in 2 months of full-time sudy. There are too many factors that go into that equation. What is your starting point? How much of the material is stuff you learned before (so you're re-learning now) vs. how much is completely new for you? How
effective is your study process? (A lot of people study a
lot but don't make great progress—I call this the "quantity over quality" approach.)
Most people study on the order of about 3 to 4 months, but most people also do not take off of work to study full-time. So it's possible that 2 months will be enough, but I will also caution you on something: I find that a larger percentage of people who study full-time have difficulties making progress in their studies. One of two things tends to happen:
(a) They study 6-8 hours a day and fall into the quantity-over-quality trap. They overload their brains and, as a result, don't learn any of the material very well. Most full-time studiers who find they're not making good progress fall into this category.
(b) The flip side can also happen: They feel like they have all the time in the world, so they procrastinate. Or they get sick of studying all the time and having nothing else to do and so they lose motivation. And then they just don't study enough to achieve their goals.
So I just want to warn you about your plans to study full-time. I'm not saying that you should not do this—but I want you to watch out for the potential pitfalls.
(2) This is exactly why you should take a practice test ASAP.
The longer you wait, the
more scary the test will become—the anxiety will continue to build and the whole process will become much more stressful than it needs to be.
It's also crucial to take your first practice test early for two other reasons:
(a) You need to know your starting point so that you can better plan. For instance, if you tell me your starting point is 400 and you want to get to 700, I'm going to tell you there's a good chance you'll need more than the 8 weeks you're planning. If, on the other hand, your starting point is 550, then I'd tell you, okay, there's a chance you can make it in 8 weeks. Either way, you want to know—so that you can plan accordingly.
(b) You need the data from the practice test to help you prioritize your studies. You may not know a lot about the test now, but you have strengths and weaknesses just like everybody else. You want to know what those are because you'll use that to help you to customize / prioritize your study plan.
(3) As an Interact self-study student, you have unlimited (included) access to our full Ask an Instructor forums and to our student services team. Since you are in Nigeria, you'll probably interact with our student services team via email, not phone—but they keep up with emails / answer questions in the same way.
I will point out that the Interact self-study program does not include direct one-on-one access to an instructor—your ability to ask questions of instructors is mainly via the forums, so there will be a delay in getting a response. Usually the delay is anywhere from a few days to a week or so, depending upon the level of traffic we're getting at that time. (The higher-priced classes and other programs do include direct access to an instructor, if that's something that you want. I do have students in my online classes from other countries—a student in Australia is in one of my classes right now. That's a matter of finding a schedule that works for you based on the time difference. And, of course, live classes are more expensive.)
(4) The Interact self-study (on-demand) course comes with a full course syllabus—don't worry! You will be given a whole series of assignments that will cover all of your resources! I do recommend working through the Foundations of Math and Foundations of Verbal material first, wherever you feel that you need that information. (Again, your first practice test will help you to know where you might need that foundational-level material.)