Could the author of the statement "I am looking for overcomers so I can overcome through them," mean he is looking for someone walking in the light, has overcome great obstacles and sin and is undeniably in Jesus Christ, a certain overcomer--to guide, mentor, pastor the author as he himself seeks to overcome?
We know we overcome only through Jesus Christ.
If the author is, as you write, saying that the Lord Himself said HE (the Lord) was going to overcome through this person, it makes no sense unless the Lord was saying HE (the Lord) was going to work through the author (God using the surrendered vessel) to overcome the enemy.
It would be crucial to know which the person meant in order to answer you Compliments.