Congrats on the grow Fuzzy. While I agree it's turned out well so far, you'll still want the PH meter as soon as you can. At the very least, it'll help you make absolutely sure that the PH is all set. I don't mean to criticize but having PH that's stayed in range so far is shit luck when it comes to the PH of your water and how many nutrients you've been using, you're guessing at the PH rather than instinctively knowing it. When temperatures change, or grow location changes, or even your water supply's ph shifts a bit you'll run into issues. Anyone here that starts to think they can grow without a PH meter and get some amazing results is probably going to come across a horribly rude awakening. I'm not saying it isn't working for you so far, I'm just saying that you're one of the lucky ones to have their PH in the right range without having to worry about it. A PH meter would still be worth the investment.
My first ever grow was with Miracle Grow and it turned out amazing only because my water is at 10.5 and the Miracle Grow happened to be acidic enough to lower it to 6.5... it was nothing but shit luck.