As you can see, with some planning, your excavation cost difference should be minimal. Footings: Cost for footings should be the same for a crawlspace or basement based on an average load bearing of the soil at 2000 psf (pounds per square foot). Walls: 4 foot high for crawlspace and 8 foot high for a basement.
But if your in-test-center score report says 156 and your actual final Praxis Core Math score is 14 points lower, it seems possible that there could be a mistake. The real issue is whether the 156 score is a mistake or the 142 score is a mistake.
As to Praxis II, first the good news: the scoring scale, if memory serves, runs from 100 to 200. That means there are 100 scaled points available in each of 0041 and 0042, and the passing score of 172 means you need 72 of them. Straightforwardly, that's 72%. 100 points out of 120 on the practice test is 83%... so it would seem that you're in good shape for 0041 at the least.