Nice! What darts are you getting? Tanks look good, will look great once filled in!
I started with Tincs in 2014, making a new tank now myself. My first tank is a success, thankfully. Really took off when I installed a MistKing and upgraded the lighting.
I agree, fruit fly cultures are a pain, more so in the winter. I've had them crash suddenly and then had to pray I could get a new culture delivered quickly to start up again.