I think your numbers are off in the acceptance of these majors. You have to remember that more students are admitted than actual spots but unfortunately SLO does not list yield. If you take the College of Environmental Science and Ag admit rate of 28,7%, then the acceptance rate for Environmental Management and Protection could be has high as 46% and Forestry close to 95%. That said, he should select the major he would like to pursue for day 1 especially since he has an excellent GPA and will be very competitive.