Anyways, I managed to finish it and grabbed some nice things along the way.
Dress: Be Happy! (#2 Gothmas by Gaslight 2 hunt, available til 15th January),
Skin: [VoiD] Lawn (L$10 in-store LEAVING SL SALE!!!, get it while you can!!),
Shoes: Rasetsukoku (#75 Gothmas by Gaslight Hunt),
Batty Tree: Moxie (#70 Gothmas by Gaslight Hunt).
Complete outfit: Bad Juju ~ Gothmas Elf (#14 Gothmas by Gaslight 2),
Skin: Bad Juju ~ Holiday Dolly (on sale for L$10 in store!).
Dress: A&R Designs (#11 Gothmas by Gaslight2),
Collar: Black Arts (#18 Gothmas by Gaslight2),
Skin: [VoiD] ~ Songbird/ Loved/ Ivory (L$25 LEAVING SL SALE!!! Get it while you can!!),
Eyes: =catmonster= Saaga Eyes/ Frozen (#22 Gothmas by Gaslight2).
There are tons more prizes to grab, including many medieval/ RP style gowns and even some male items, and you still have a week to grab them!