they're taking so long to finish.....

so my gorgeous nlXmix1 plant is gettin pretty ripe.
i was hoping that i could cut it down after x-mas but its taking a long time to ripen. today is day 74 of flowering and im finally starting to notice some hairs turning colors on the buds that are lower down on the branches. im trying to be patient but its really starting to stink up my apt. yesterday i could smell it before i opened the door!
im thinking that my temps are swinging way too much. it never gets above 85 but has been down to as low as 47.
could this be extending the flowering period?
also im watering only with water now and the leaves are starting to yellow. yesterday i added a top dressing of supertea when i watered to add some n-p-k. should i continue this or not worry about the yellowing fan leaves?
any help would be greatly appreciated, i need quality medicine.

1. Forget the hairs...check the trichomes.

2. 85 degrees is OK...don't go below 65 degrees

3. Stick to water only now...no nutes....and let the plant get very dry/thirsty before you cut it down.

4. Yellow leaves at harvest is normal.