Hi! I work on Rhino for this kind of modelling, which can export on a wide range of formats, so file format will not be an issue and it can be made in nurbs or mesh. Plus, your lid is quite a simple piece that should represent no challenge, so it will come out pretty much perfect even if I don't try to make it perfect. I also work on Maxwell for 3D renders, in case you need that too.
I'm giving you a time frame of two days as tops, because I always calculate an extra time for any possible needed change or any kind of unexpected event, but the work should be finished in a matter of hours: as I said, I don't see any complications with this kind of job.
Please, be invited to check my portfolio ( https://www.freelancer.com/u/MatiasDupuy ). I have been on freelancer.com for a couple of months now so I know my portfolio might not be impressive yet, but I know my job and what I can deliver.
I hope to hear from you again soon.
Sincerely,
Matías Dupuy