Customised Bluetooth Keyboard

I need you to develop some software for me. I would like this software to be developed for Mac . I am using a mac Bluetooth keyboard. I am trying to create a customised keyboard with Karabiner so that when using particular software I can make it easier. For example holding down one button instead of remembering all the keyboard shortcuts for the software that might require 2, 3 or 4 buttons.. I have already managed to get some simple parts of this job done but I am unable to get the keyboard to hold shift and the right arrow key down to 'fast forward' in the program or option and the right arrow to 'super fast forward'. Your help would be greatly appreciated! Further details: The program I am using is sportscode. It's a video tagging and editing software for elite sports teams. You can download a free 30 day trial from there website.. [login to view URL] The keys that I require to change are as follows; 1) ~ presses k (this is used for flagging edits, k is for keep) 2) F5 presses shift and command and f (this pits the software in full screen coding mode) 3) F6 presses command and m (this puts the software in presentation mode) 4) - presses shift and left arrow (needs to repeat to rewind video) 5) = presses shift and right arrow (needs to repeat to fast forward video) 6) [ presses option and left arrow (needs to repeat to super rewind video) 7) ] presses option and right arrow (needs to repeat to super fast forward video) 8) \ presses c (this is used for coding edits, c is for coach) 9) , presses shift and tab (takes you back to previous edit) 10) ' presses tab (takes you to next edit) 11) up arrow presses option and command and 0 (this increases code window transparency) 12) down arrow presses option and command and 9 (This decreases code window transparency) Let me know what you think and if this is all possible. Thanks