Recording hz doesn't really matter in this instance, but it's best if your sources match, so make sure they're both set to either 44.1 or 48. There is a built-in automated audio syncing option in Premiere, so it's very easy to sync when editing.
Here's your whole workflow:
Make sure you're recording audio on both interfaces, so both Audacity and your ...
Press once the record button to start recording. Clap 3 to 5 times.
Import both video and audio into Premiere.
Align the peaks in the audio of when you were clapping.
Once you've done that, mute the audio that comes with video, and only enable audio that you've recorded separately.
I've also paid $200 or so for pluraleyes.
The way you use this is ...
You can buy a cheap USB to micro USB for USD$10, see if your project worth more than that. You can buy it online, so, there is not much of an excuse for not getting it. But I do not know if your mic needs power from the USB connection. You probably need to make a test.
But on the other hand, sync of an audio source and a video can be done almost ...
You need to define what is acceptable to you.
Record a well illuminated scene and increase the ISO while decreasing the aperture and compare what noise level on your specific camera is acceptable for you, and you will know what are the limitations of your equipment.
In the case of the example video, the noise is "the same" because both moments, the dark ...
There is no good way to use an Android phone as an attached camera in the way you want. Your best bet is to get a GoPro or other dedicated camera which has a USB or hdmi output, or to use a microUSB adapter to connect your mic to the phone.