Gif animator

NOTE: work involves viewing adult material. I am looking for an assistant who will be in charge of creating animated gifs from a group of videos I´ll provide. The number of videos to work with is 100, and I indicate the video parts that will loop forever to make the gif (for example, from second 34 to second 56). Assistant will also enhance some gifs that already exist. The enhancement has to do with filesize (the animated gif has to be light enough to load on a TUMBLR post queue, so other tumblr followers can view the animated gif on their queue if they follow my Tumblr blog) and with color (videos should be in full color, with the smallest filesize possible). You will generate the gif and the html file (so the animation can be previewed on a browser). Assistant must have experience in gif generation with some major software like Photoshop or another so he/she can tweak the videos in minor ways in CASE necessary, such as making the end and beginning of the loop go smoother, or making a specific frame last longer. I will give you access to the tumblr account so you can test filesize and loading of the animations. Being familiar with Photoshop is a plus.