I have edited photos for commercial use in the past. I use Photoshop CC on a daily basis and Lightroom per project. I admit Photomatix Pro is not a program I am familiar with, but I learn quickly and will produce quality images for you.
Merging images, removing sensor dust, and making the image appealing to the eye is a passion of mine. If I am selected I would like a commitment to cover the cost of Photomatix Pro, 8 hours minimum at $20 per hour. I am confident you will love my work so that shouldn't be a problem.
I use Filezilla for file transfer, but I have no problem installing Transporter 2.0. My home office can handle your requirements for large files.