Driver mod HELP!

Hello guys,
My Fenix TK35 clone witch i ordered here is on it’s way.
Now, i know it will be badly driven and i am looking for driver.
So far this one is a little overdrive -witch i like, bit the LD-29 seems to be easily converted so the mode button will work.
I believe keeping the serial battery connection is better so i can maintain the current until i drain the batteries further /i saw this mod/.

Any suggestions and advices are welcomed!

EDIT: just bough the LD-29 and Attiny13A + conversion board from this topic. About a mount untill they get here.