The dolls should be a breeze, I had no idea they ended up forming together til' my brother told me later on since they go down pretty fast.
The Golbez fight can be a pain at first since you will only have Cecil and Rydia after the rest of the party is taken out. You really only need Cecil, Rydia, and Rosa to beat Golbez. First off, while your whole party is still alive, have Rosa cast slow on Golbez, I only went through the fight once, so I don't know if regular attacks w/ no elemental affinity will cause Golbez to do Barrier Shift, since he is first off weak against Holy, and when Rydia pops in she casts Dragon which has holy element, and you don't want her healing Golbez, so don't attack til' she comes in.
The tricky part in the fight is reviving Rosa, you gotta time it so that one revives and the other heals her enough to survive the -ara spells that Golbez will throw at you. Cecil should have Libra, so once you get Rosa up and running, have her heal, Cecil use Libra on Golbez every time he uses Barrier Shift to see what his weakness is changed to, and have Rydia summon up the corresponding eidolon. That'll basically be the strategy throughout the fight.