Hey Niall, sorry for not replying sooner!
The colony is still doing very well, many more ants since I last posted and the nest is larger. They made a new entrance which is alot more active than the old one, here's a couple pictures of it and some workers consuming a grape;



Soldiers seem to be foraging more regularly as time goes on and there are larger ones that forage now. The only bad thing (for observing) is that the brood is out of sight which means the majors and queen aswell, but I know they are in good health with the rate the colony is growing at.
I have also not seen anymore of the parasitic mites for a long time now, the last ones I saw were on the queen but it has been weeks since I've seen the queen because of the brood being moved.
Something I regret doing is putting in the artificial nests as I believe the front of the setup would have chambers all over by now and I regret not adding more to the setup although I wouldn't mind adding another setup for this colony sometime in the future when it gets larger.
Just to add about misting the setup, what do others use to do this? I've tried looking for an ultra-fine sprayer as the one I have at the moment is slightly powerful, but can't seem to find one, any help appreciated.