Transitions course, self testing

Several Students and I are in a transitions class, part of this class is self paced. We are to locate a testing application which will enable us to test 1200 on questions with 80% plus accuracy. The problem is locating a application which will show 100 questions and the accuracy rate. Some do not have a test bank of 1200 plus questions. The biggest problem is that we have no idea what the test will finally look like at completion. We signed up for Kaplan, an operator who said yes to 100 questions per test, with a large enough test bank. Reality is test are only able to be 85 questions long, you cannot make them bigger... and many students are out 50.00. some opted to find another test and none of us have found anything we can use! Please help us LPN's wanna be RN's! The instructor has given us the names of a few possible testing applications, but they are generalized books, without purchasing and breaking the seal can we find if they will truly work. Davis, Hesi, Lippencott, Mosby. These tests need to be for NCLEX-PN studies.

Thank-you for any help you are able to give to us!