It’s cool that you have such specific and distinctive interests already.
At this stage, I would think less about specific colleges and more about how you might leverage and combine your interests, in terms of majors and career paths. If you have a vision (or perhaps multiple visions) for what you want to do, the clarity about where to study will come naturally, based on where the most compelling work in your field(s) of interest is being done.
For example, looking at your interests in both engineering and biology/mycology, my first thought is the field of biomaterials. For example, Mycelium-based materials - Wikipedia. A materials science degree might work even better for this than bioengineering. A few schools even have programs that are biomaterials-specific. (One example: Sustainable Biomaterials Major | Sustainable Biomaterials | Virginia Tech )
You may find that some of the most interesting programs and research are at land-grant universities with ag schools. Generally these are not the most rejective private universities that top students often feel they must aim for. (Where the two worlds intersect is at Cornell, which has a lot of interesting interdisciplinary stuff going on. Example: Biohybrid robots controlled by electrical impulses — in mushrooms | Cornell Chronicle )
But overall, for both life sciences/botany/mycology/etc. and engineering, the Ivy+ schools do not corner the market on opportunities; there are top-notch publics with ag schools - including VT mentioned above, Purdue, UIUC, UC Davis, Oregon State, Rutgers (Mycological Collection at The Chrysler Herbarium and Mycological Collection of Rutgers SEBS), the Cal Poly schools and more - that could all have amazing opportunities for your interests, so keep an open mind and don’t get entirely stuck on the quest for “trophy” acceptances. And do try to enjoy high school along the way!