Your workflow approach is problematic. AE is not an editing program. The weakest aspect of AE is audio and if you’re editing interview clips you’ll be dealing with a lot of audio.
A more streamlined flow:
Do all of your editing in Premiere with your original media. When you have a finished and approved final version, you can either make use of dynamic linking to do the grading in AE or you can simply open your Premiere timeline in AE. All audio editing should be done in Premiere.
There’s a lot of grading options inside of Premiere and so if there’s a quick turnaround time, I’d recommend that you stay in Premiere. You also could export an XML and do the grading in Resolve.
Also, your Sony files are MXF which is a wrapper that Premiere has problems with media managing. If you’re committed to creating shortened files, you’ll need to transcode to pro-res or DNxHD.
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