How can I raise the possibilty here(after "I mean")? 
>I decided to choose an **interesting** subject, I mean a topic that you **are really interesed** in. 

What’s the correct procedure in cases like this?  What's the rational choice?

>1. "... I mean a topic that you **might/may** really interested in?

>2. "... I mean a topic that you **would probably** interested in.

>3. "... I mean a topic that you **are probably** interested in.

>4. Or what else can I say...?

I would like to know whether the repeated usage of the expressions "interesting" and "interested in" sounds a little **weird** and **awkward** or not.

Does the **simultaneous usage** of the two above-mentioned expressions with the root "**interest**" show the speaker's **lexical weakness**?

Is there anything you’d like to add or change?