If you have a GL, can't see why you wouldn't try hard, and just brute force a node with them every refresh.
Yeah, since it takes 6 hours to get energy for 2 battles and 5 hours to get your Stamina back to 100% (from 90%), then you only need 2 teams you can count on. They keep going down to 90% & back up to 100% before you need them again. It's a little tricky around sleep, unless you sleep less than 6 hours per night, but at most you need 3 teams that you can brute force nodes with. With any 3 of: relic Padmé squad, relic JKL squad, relic Revan/Malak squad, relic JKRevan, or relic GAS you should be able to brute force your way through a heck of a lot of this. (Not sure about sector 3/4/5 Boss fights though - they'll probably get tough before the end.)
I've actually already used my Geos to crush a node in Sector 1 - that was fun. Just be careful of AoEs vs. counterattacks then thwack key toons with Spy's special. Imp Troops are also extremely powerful against the right opponents in this mode. Just don't take them against Savage.