So really against the Geos you need Nebot and J Scavenger. You don't actually need the other Jawa. If Nebit is taunting and Scav is present then the Geos will get the suicide TDs. So the real questions are:
can Nebit be upped and mod to let him survive 25 or such Geo attacks?
What other toons would support that Scavenger Nebit combo than Jawa, Datcha, and Jawa engineer?