Thanks for writing this up.
The need for some (not all) evangelicals to start from a conclusion (that the Bible is historically true) and then imply that that proves the predicate (that the Bible is theologically true) cannot be overstated. (People should clearly see the cart-horse problem here. Scholars are supposed to let the evidence lead one to the conclusion, not vice-versa.)
Speaking as a non-Christian, Christianity has many good rational arguments in its favor; unfortunately, the evangelicals often avoid them, in my experience.