I would recommend thinking about what you want or what your end goal is (timber production, specific wildlife, aesthetics, etc). Tsi or FSi, whatever you want to call it, is a tool to achieve a desired result. Knowing what you want as an outcome will dictate the type of Tsi you should do. Most likely it will be a couple of types( crop tree release, mid story removal, invasive species control,etc.) for different areas. I would suggest considering doing it so that you can encourage wildlife movement how you want ( making pinch points, bedding cover,etc.). Main thing is that putting sunshine on the ground is going to make things grow and this is what you want for most game species. "Weeds" are what they want,all the while improving the current food you have. If this is out in left field please disregard.