It will be a merry christmas and hopefully a better new year than this one!! Lol.
Good luck with what you are doing and I hope it works out.
If you decide to invest in equipment, just point out to the mrs that you will be ££$$ up when you have grown a few ounces.
I spent 300 quid on a light, 35 on mylar for my walls, about 6 quid on pots, 80-100 on nutes, (several grows worth. Probably cheaper and maybe even better ones for less tho.)
It is the most fun hobby I have had since I played competitive sport. I love learning and I have gotten the bug for growing. My mrs complains about me doing it loads, but if it was not that it would be something else.....shhhhh dont tell her I said that!! She also likes a toke, which helps smooth it over.