You have two road bikes ...
Two of the exact same bike. A stock entry-mid-level road bike. Under a grand in cost per bike. You don't need two, so you decide to turn one into a different style bike.
What do you do with the bikes? Do you keep one as your road bike and turn one into a commuter? cyclocross? single speed?
Interested to hear what YOU would do. Please don't tell me to do what is best for my needs. I'm interested to hear what you do, in your situation and lifestyle.
I Don't Understand The Question
Determine which of the two meets my needs best, in terms of fit, comfort, capabilities, whathaveyou...
Sell the other one.
Who would need more than one bicycle?:innocent: