Can Time Machine mirror two external hard drives?// anyone familiar with Adobe Lightroom?

Hi,

I'm a photographer. When uploading raw photos from an SD card to an external hard drive with Adobe Lightroom, I like to make second duplicate copies of the photos to another external hard drive. I then usually disconnect this 2nd external hard drive and start deleting files with Lightroom on the first external hard drive.

At the end of the editing day my 2nd external hard drive clearly has all of the original undeleted files..and my first external hard drive is polished and cleaned up.

How do I delete all of those same files I deleted with LR on my first external hard drive on my second external hard drive?

Can I do this by just mirroring two external hard drives with Time Machine ? Making my 2nd external hard drive match my 1st external hard drive after all LR edits have been made for the day?

Or is this best done with a third party service? and if so, what is your favorite? chronosync?

I basically just want two EHD's that will always remain twins, mirroring each other. Please help!

Thanks