First of all, most of the tests are equally hard. The LSAC goes a long way to ensure the difficulty on each test they administer is equal.
Secondly, take the test in June. Do you really want to study in the hot and nasty summer?
Plus the test is @1230pm instead of bright and early like all the other tests. Gives you time to sleep the night before, drive comfortably to the Test site. If you can't get a 160-170 now you ain't gonna do it in October. Plus all you've learned will go to waste unless you agreesively study in the HOT summer. So buckle down, quit being a chump and take it like i'm taking it in June.