Bought the supplies, and here is what I ended up with.
Battery > cable > Tamiya male > Tamiya female > cable > Tamiya male > tamiya female > cable > Fr2-le
The middle female > cable > male is the new addition. The unit fires up as normal, nothing wrong there. the crimp is wicked ugly on one connection, might go back and redo that later, but it works. I wonder how much resistance has been added and if thats going to impact long-term usage of the battery (say a 10% reduction in time). I don't know, test for later I guess.