That's how I usually look for duplicates. Below the list of candidates, there are filters that can narrow things down quite a bit.
The list of profiles you manage is your Watchlist. At the top right center of any page, pull down My WikiTree, and Watchlist is near the bottom of the list.
I did a few deliberate duplicates for the same reason, and regretted it. The sources come across in a very inconvenient form. They are integrated as inline references in a timeline-style bio, with lots of redundancy and wikicode. Teasing them out and editing the existing and imported bios into a coherent, readable form is ultra-heavy lifting. These things only become real once you've experienced them. Hence the universal GEDCOM advice: Do a very small one first!