If there's a piece of this that you think'd be especially useful, like the merging of data, then it'd be nice to pull that out and open source just this piece.

If there's a piece of this that you think'd be especially useful, like the merging of data, then it'd be nice to pull that out and open source just this piece. But if you don't have the time or want to expend the effort, I agree with what some others have posted here. Open source it with some decent documentation and screenshots. It could serve you well down the road.