Okay. Yes, please use the admin console to make the requisite modifications to the .ftl files. In 3.0.3 you won't need to modify the JavaScript after all! You're actually just going to need to change some CSS classes.

Edit the file /template/global/custom-css.ftl and add the following

.jive-profile-images-edit #photo-preview {
    width: 120px !important;
    height: 160px !important;
}

SBS uses these CSS rules to set up the cropping width and height. By default they're swapped (width: 160px; height: 120px;) so changing them to the above rotates the cropping tool from landscape to portrait! Most all of the site is not concerned with the profile image's height and width so as long as you can crop it in "portrait mode" you should be ok. It might be worth noting that Avatars are a different story .

Note that in /template/global/profile-avatar-crop.ftl, the consumer of this CSS snippet that we're concerned with, "#photo-preview" is assigened to the JavaScript via the template engine so if that ever gets changed at the template level you'll need to change that here too.