I agree with those who suggest making test strips on the paper you wish to make the final print on. While small pieces to make a test strip will only show a portion of an enlargement somewhere along the line you will have to make a full size print and probably see something to improve/correct and need to make at least another print. I didn't notice the mention of dry down which varies from paper to paper so it might save you paper to fully process and view the dry print even if it means reprinting another day. You could consider scanning your negatives for a larger view so you can pick out the ones worth printing and get some idea as to areas that may need burning, dodging or split-grade contrast printing. Even making test prints on a less costly paper before deciding on using an exhibition quality paper. There really are no shortcuts to making an exhibition worthy image. of course starting with the best negative possible helps.