College admissions is based on understanding what a college wants and presenting an application that shows how you match. Your determination to attend VA Tech doesn’t matter. What does matter (to VA Tech) is unweighted GPA, course rigor, and test scores. Applying as a transfer doesn’t change that. There are still standards you have to meet and level of interest isn’t high on their list.
According to your initial post you purposely chose a less rigorous path and your math SAT is low. Now you want to visit the school to explain your choices to the admissions officers. They aren’t going to make individual appointments to discuss applications that are currently under review. Even if they did, what do you think you can say that will sway them? The VA Governor’s School for Sci. & Tech is for top math and science students, and it looks like admission is competitive. So why didn’t you go? You either weren’t accepted, didn’t apply, or rejected them for a less rigorous path. Choosing a less rigorous option is fine, but it won’t be overlooked by competitive colleges.
What you can do is write a (brief) letter of continued interest. Tell them that you’re taking calculus this semester and about any new accomplishments. You can also tell them it’s your first choice and you’ll attend if accepted. But keep it short and have your guidance counselor read it before you send it.