for the price of that FC I'd look at something like the synergy f4, with the unify pro v3 and a xm+

https://tinysleds.com/collections/flight-controllers/products/synergy-f4-flight-controller

you can solder the VTX and RX directly onto the fc which makes it much easier to set up and the stack is much smaller so it fits in almost any frame and no wires running around your frame, you will need to adjust the harness to fit your esc, and a unify vtx is pricier than the one you listed

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also Id add some screws, nuts, and nitro hose to your list

nitro hose so you can cut to make perfect size spacers for your stack

https://www.amazon.com/gp/product/B07F23JCHJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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long screws that go through your bottom frame plate and hold your entire stack using the hose as spacers

https://www.amazon.com/gp/product/B071F8QXQK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

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m3 nuts to put on the screws holding your stack to keep it all together

https://www.amazon.com/gp/product/B07BD24MXV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

this is the setup I use on all my builds now

also some m5 nuts for the props, I stopped buying the fancy colored ones

https://www.amazon.com/gp/product/B017NBZSCS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1