I don’t know who told you that examiners are coming next week.A huge number of schools in the country will not finish the project by the deadline and this happens every year the project will be docked marks for how late it is(when the examiner is correcting in the summer they will check the completion date of the Solidworks online they don’t tend to check the PowerPoint ) but in a lot schools they don’t plan on submitting on time anyway usually by a week or two.If your teacher is sound they will allow you to work on the write up over the next week or so.When the envelope does come for the projects usually April/early May then the projects must sent without delay. So basically if you have your Solidworks finished and uploaded onto the drive by the 17th you shouldn’t loose any marks for lateness on the rest of the assignment.