While Mutual Support is pretty vital right now, it's mostly because of the GBZ war. Without it we'd have adequate coverage. We could have it in 4 years with 4 boosts but now that our pp income is back I suspect we'll be too busy acquiring research teams to have much RP to spare. Certainly won't this turn, that's for sure. I suspect you want to do Border World Focus -> Mutual Support, then To Boldy Go -> Independent Captains? That would rebalance our defense requirements forward and reduce the number of home sector events, plus give us a bonus to respond to Border events. Could do Hard Shell System next, although it might require us to reduce below two ships per home sector.