I would highly recommend you reach out to influencers inside the WordPress community.

And when I suggest that, I don't mean sending mass emails with pitches.

I mean truly connect with people online and at live events in an effort to build relationships. Once those relationships are built, then you can approach people to review your plugin.

To build your connections, I would recommend:

Attend local MeetUps
Travel to WordCamps
Participate on Twitter
Join Facebook groups for WordPress and help people

I am eager to help people I know, try their plugins, and help promote their offerings. But I have to know them or know of them.

If I receive an unsolicited email pitch from someone I don't know, it goes immediately to the junk folder.