As a rated PowerPoint expert I would be delighted to produce the eighty four slides within your deadline and give them the "wow" factor you need.
I designed presentations for twenty years at a leading multinational, delivering them from Mexico to Turkey to audiences at every level from Main Boards to General Public. Now working from home in the UK across five freelance sites, I have designed templates, and both created and improved presentations, to good reviews from international clients.
Happy to work under a Confidentiality and Non-Disclosure Agreement if required, and start as soon as you pay the fee into the site and send me your existing material.
What is not clear is whether you want to keep your existing template?
If not, or if you want something different, I can design, change or find one for you but will need your input to produce the "right" design (e.g. What sector are you in? Do you want wide screen or standard size slides? Do you want a logo/strapline on the slides? Are there any layout(s), color(s) or font(s) that MUST (or even must NOT) be used?)
Normally I would provide samples to let you judge my PowerPoint skill for yourself. But you posted this as a "restricted" project. I can't send an attachment unless you send me a Private Message first!
Hope you find this of interest and look forward to hearing from you
Bob Allen-Turl