It'll be an awesome camera. You can buy a fisheye for it that screws on to the filter threads, but since it uses 46mm threads and there aren't many lenses made for that filter size, you should buy a bigger size and use a step up ring. i'd recommend this http://www.bhphotovideo.com/c/product/676994-REG/Opteka_OPTSC52FE_52mm_0_3X_HD_Ultra.html
with a 46mm to 52mm step up ring. the tm700 will work with a scorpion handle since it has a tripod mount. it will take good follow cams if you hold it steady enough, a scorpion handle doesn't help all that much, but if you're using a fisheye then it's pretty easy to get decently stable shots.