wow, iwas telling some co workers about the script i wrote and how it works.. They never heard of this puzzle and wanted a shot, my script is currently searching for puzzle 66,67,68 and 69 just by iterating through the decimal range for 20000000000000000 - 2ffffffffffffffff
they both bought the script for $50 bucks each lol. i'm fine with selling the shovels

If I remember correctly, you have that script that works with step size, right? Well you sold it for cheap IMO, cause it has great potentials and one only needs to work on a special step size in order to find a key, but it shouldn't be restricted to rmd160/addresses alone, I believe you should work on a public key version alone where it would be much faster and with a few tricks you could figure out a way to find some keys.
One suggestion is to manually insert a specific G, something like an offset of a public key of 130 for example, then you could set 256 bit range and grind with different step sizes and different increments after each x iterations.
Overall it is a nice work done.👏👏