With my extensive experience in graphic design spanning over 8 years, I am well-versed in rescuing logos from low-resolution challenges, just like your project demands. In addition, I have successfully completed many logo- enhancing tasks similar to yours where I enlarged the size and improved the resolution without compromising the quality.
As a proficient expert in Adobe Photoshop and illustrator software, two essential tools for this task, I assure you that enlarging your logo to 6 inches would not pose any difficulty. Moreover, my knowledge extends beyond mere resizing: I am committed to creating sharp, clear images while enhancing and preserving their integrity. This proficiency distinguishes me from other professionals.
Furthermore, as an added-value service for your project, if chosen, I will not solely convert the enhanced logo but also deliver the final product in various file formats including .PDF as you requested. You will have full rights to the artwork produced by me for your project. Lastly, with quick turnaround time and prompt response to client revisions during each phase of the project, we can ensure that you'll get your larger-than-life logo in no time!