Possibilities are endless. This is an innovative design. I assume you want to take the layout you made and apply it to C47 not to E47. The loss of the down arrow on E47 tells me that.
It will cost me to do 4 major hacks to the key system and hours to get the simulator to play with. The f ff system is not generic and is hard coded with timers like that. Since ASN cannot do the shifts and arrows, I can make a blank template for you and shift your shifts to be like E47, but you would have noticed on all our double shift layouts we do not have the f[g] and g[f] at all. That is by choice and decision. I'm not adding that. Lastly it needs more hacks to change from RCL to STO after you pressed RCL. The system does not allow that - you need to EXIT first. Hack-able but more work.
The number of hacks needed to make the system do this makes it restrictive for me. Sorry.