Thanks for dragging me into this topic @Gadarien , lol. I do appreciate it, but there are so many others out there really killing it. Im small-time 
Welcome to OG @Jayrock93
Ive only been growing just over a year, but love new people getting into this stuff. Ive said it before, and sayin it again… “There’s never been a better time to start growing weed” . Legalies aside, automation coupled with wifi control makes it fairly easy to be successful.
Here’s a link to my 2x2.5 grow. You might be interested in that one since its same as what youre using now. I just stuck a 300 watt 3x3 lamp in it. Its hard mounted and controlled only by Light Level 1-10 and plant height. Fun and challenging!
Im using the Octopot system in both of my tents - 2x2 & 2x4. It produces big plants fairly easily, with a bit of help from us growers. Eliminates over or under-watering. Really slick. Truly the “easy button”.
I love the AC Infinity Controller 69 and many associated accessories - fans, exhaust, etc. All controllable while Im away at work. Its a good feeling to be able to change shit on the fly.
Using Athena Blended nutrients based on what my buddy uses- he got me started growing April of 23.
Look forward to seeing your grow!
As for the par meter, I got this Uni-t from amazon. Fairly accurate and cost-effective 
and coupled it with PPFD app. I paid for it to get rid of ads…
Works great! Just make sure you get the Bluetooth version. It easily connects to the app and converts to ppfd. You can also create par maps…
Thats a map I created with my HLG350R in my 2x4 tent.
By the way, Ive never grown anything prior to starting growing weed in 2023 at 55 years old. Not even a house plant.
You can do this. All the tools are out there to be successful. Seasoned growers use their skills built over the years… Obviously that comes with time.
I like numbers. Anything I can track and repeat. Thats how Ive been semi-successful with my grows. Attention to detail, and know what numbers youre trying to reach… RH, VPD, temp,etc.
Arm yourself with reliable information and numbers.
Hope any of what Ive said helps you out, even a bit.
Also, get a better lamp when youre able. 100 watts is decent, but to fully realize what a 2x2 is capable of producing, you will need more lamp. Not necessarily 300 watts like my 2x2, but something with more umph.