aljunied GRC is probably the biggest headache for them right now, cos whichever way they slice & dice it, the neighboring GRCs will be greatly affected, due to the previous GE results.
Actually if you are expecting the popular support to drop below 60%, the logical thing would be sacrifice Aljunied. You then focus on safeguarding the surrounding GRCs. If you spread it too thinly and there is a miscalculation, high chance to lose 2 GRCs instead of just 1.