Proposal Feedback for GSoC : Per field-instance lookups

Hi everyone!
I was going through the GSoC Ideas List, and the Per field-instance lookups caught my eye. It seemed too good an addition to Django to miss!
I have been studying the related source code ever since, and after going a lot of back and front with ideas, I have finally come up with a draft proposal. I would love to get some feedback on my Proposal.
GSoC Proposal for Per field-instance lookups

I wrote this proposal keeping in mind a Medium sized project, 175 hrs of commitment

Thanks in Advance.
Himanshu Balasamanta