Hi,
There's really not a lot that can be done on the site level, aside from updating things, keeping them updated, etc. If you run these on a VPS, a lot more can be done.
That said, there's a few plugins and addons that can be added to make WP a bit more secure. A one time job is never going to be as secure as a day to day (or week to week) update and analasys, however.
If you'll look at my profile (click the link directly, don't go by what they show in this specific bid), you'll see 100% project completion, 100% positive (5 star) feedback, and a link to my own site where I've done the same for better than 10 years now. Your project will be completed with the same diligence and persistance. Your task will be completed within the advertised period of time, and be given everything needed to be done right.
I look forward to hearing from you and working with you on this project.
Tom Whiting