Help needed with PC specs for video editing

That Ryzen 5 5500 is a poor choice for video editing by current standards: It is not a true Ryzen 5000-series CPU per se, but is instead a gimped APU with its integrated GPU disabled, only PCIe 3.0 support (versus PCIe 4.0 on the non-APU Ryzen 5000-series CPUS) and only 16 MB of L3 cache (and again, the non-APU Ryzen 5000 CPUs have four times more L3 cache than the APUs), which will bottleneck the performance of that RTX 4060 which absolutely requires full PCIe 4.0 support to avoid an interface-induced bottleneck as it utilizes only eight of the 16 PCIe lanes. The end result is a system that actually performs worse than a quad-core CPU that's a CPU generation older. As such, it should not have been labeled a Ryzen 5 5500 at all, but a Ryzen 5 5600GF instead as it is essentially a Ryzen 5 5600G with its iGPU disabled.

Unfortunately, the 5500 is also in no-man's land because it requires a relatively expensive higher-end GPU (I'm looking at you, the RTX 4070 SUPER) just to minimize that PCIe-induced GPU bottleneck, and then you'd end up with the exact opposite problem (too much GPU and not enough CPU). As currently configured, that RTX 4060 would utilize only eight PCIe 3.0 lanes on your planned CPU (whereas the RTX 4060 itself is wired for eight PCIe 4.0 lanes), while the 4070 utilizes all 16 PCIe lanes (thus making it much less vulnerable to PCIe clock speed deficiencies).

So, if you get that particular AM4 platform, see if you can get a Ryzen 5 5600 (make sure that the 5600 CPU does not have a "G" anywhere in its model number) instead of that planned 5500 (and remember, the 5600 and the 5500 are of two completely different microarchitectures). And if you do go Ryzen 7, don't pick the plain non-X 5700 as it is like your planned 5500 – a gimped APU rather than a true 5000 series CPU.