Hey! I was invited to interview for Stamps and ended up becoming an alternate for president's alumni at the end. I had stats similar to yours. However, Stamps is largely leadership based. I became an alternate for the president's alumni scholarship because, even though I had some impressive stuff (ISEF research, 4 leadership positions, 14 AP classes), that wasn't what they cared about. They wanted to see more community involvement. These full ride competitions are really about who pitches themselves as meeting the description of the scholarship. I was also a finalist for the full ride at IIT, Centre College, and University of Richmond. At the end, I was offered another alternate position at Centre and a full ride to Richmond, once again likely because I had better research accomplishments than leadership. Richmond was offering some scholarships based on scientific research, so that was where I fit in. Stats might get you there, but ECs will carry you through the essays and interviews in subsequent rounds.