Can I just use the Image to Woo Product functionality?

You could use the plugin for just this functionality for sure. Just do not put any gallery shortcode anywhere and you'll be ok. You could still use our Model Products functionality also to help from having to set product settings/variations for each image. You'll still Technically have to import the images into a "Gallery" edit page. This makes it so images will be will have proper "Model Product". Basically a Model Product is a woocommerce product that our plugins uses to duplicate/model the new product settings. 

Just a note here too is that the new products are created in woocommerce's product area too so it works in the regular woo shop too and doesn't need to use our Gallery style store front :)

More info can be found here:

You will need to purchase the Feed Them Gallery Premium to make this happen.