I have got red crate with no (new) pirates (not that I used Nest, Hondo or Starros for anything) invested in anything above the gear level when they start needing kyros (bar Guiggold, which I mention a bit further down). The challenges for a certain pirate to survive 10 battles I used Traya lead, JML, Barris (heal folks if critically hit), whichever pirate and Wat (tank on Luke, 5% health and prot one on the pirate and the tm on enemy turn on Traya) and put them up against Mon Mothma or Geos so the team kills itself whilst constantly attacking Luke. I had booming voice, entrenched (x2) and the one that gives you a few hundred% defence for the important datadiscs. For the the one with Vane and Silvo I removed Barris and both survived. Because Quiggold taunts at the start of battle I did end up putting some more gear on him as he kept on being targeted, so with enough health and defence techs on and keeping stamina high with stims, maybe it could work. I just didn't have the patience for the potential rng of it all. I didn't do the win with a full team of pirates in sector 5 but I did come across a video where supposedly Quiggold at g12 and the right datadisc set up (protection recovery, health, ramping damage) he can survive and wipe out a Mon Mothma team whilst the other pirates have been killed off, but I didn't need to attempt it myself.
Perhaps loading up Raddus with vitality, zealous ambitions and leader's resolve datadiscs could just nuke teams with the pirate that needs to survive as an alternative? Either way if you haven't made any progress load up on health/prot & defence/evasion techs and stamina stims as you've got less than a week to get the feats done!