Late flowering... Trying not to waste the goodness! :|

Two weeks from harvest. Sativa-dominant Micro CFL grow (125W), very crammed space.
I have small white spidery mites. I had a batch in veg i thought i had exterminated by a mild pyrethrin spray (food and tobacco pesticide got from a loc shop), but they came back. Puzzling though, they seem to infest just the soil. I simply can't spot them on any leaves.
Other than that, my plant had a mild nute burn, and now some old leaves are showing yellow spots (many of them and dense) similar to a Mg deficiency or Calcium.
The leaves are also curved down the sides sometimes very bad, almost rolled... I don't know. I am 99% sure i did not over-underwatered, and the buds are still growing nicely and so is the new growth leaves. They also reacted very well to the Maple Syrup i was feeding them (substitution for black molasses) till a few days ago.
I am spraying mildly on the soil to kill the white bastards but they keep coming back!

Dunno what to do. Maybe just forget about the many problems for 10 days then chop everything and enjoy? I already stopped nuting so i wasn't doing anything for the nutrient defs...
I don't wanna hit any record, just avoid throwing everything away in these last days, coz these buds looks good. Not too crystal-ish but good nontheless.

What do you reckon?

PS Hint: i am pretty sure i have low RH, thought wasn bad in flowering. As for Ph, i checked runoff with an acquarium test and didn't seem too off 6-7.

HOT SHOT- NO PEST STRIPS!!!! hang that in there for a few days and theyll be done for..

tnx What about the rest?

Can the mod move this to the infirmary? I posted in the wrong place