Question regarding export specifications and how to accomplish them

You would have to enable color management in AE to really be certain about those things, but since 95% of people quite generally are pretty clueless about CM and never get it right (no offense to anyone) the risk of making a mess is much bigger than it enhancing your workflow. However, since Rec. 709 is essentially "full sRGB" as understood in the computer world, there is not really a reason to do anything unless you really want to squeeze out those extra percent for oversaturated HDR colors. Therefore relying on AE's standard workflows with CM off and using the output presets should suffice for 99% of regular work. Of course a few basic rules still apply like not overcranking colors, but barring specific Gamma issues you should not have that many problems.

Mylenium

There are encoding presets for all of that in AME, so it's pretty much a moot point. You may want to educate yourself on this a bit by reading the online help and just having a look at AME. The rest is a bit nonsensical. 23.976 FPS is essentially 24 FPS, so unless you want to be overly academic about it, just choosing a suitable preset will work just fine. I'm confused about the interlacing part. Why should that even be relevant? If you use interlaced sources, you simply turn it off or choose the best suitable field dominance in the footage interpretation. Otherwise it plays no role whatsoever in anything generated inside AE and the program won't render fields unless you enable the respective options in the render settings.

Mylenium