People that have fallen under salesmens spells, then apply a mixed jumble of soil and hydro information in their soil grow, and then under the assumption that they're doing everything right start giving advise to someone growing under different conditions than themselves.
It's going to be the op's first grow. They're on a budget. They're gonna use bag seed in 6 inch pots, not expensive seeds 5 gallon pots. Their plants will be small. Their plants will not be high yielding.
Using fresh bagged soil (even the $5 a bag Hyponex stuff which I use) and some Pearlite, and by keeping it simple, hell yeah they'll be able to make it to flowering without fertilizing.
All the while they will be avoiding nute burn, nute lockout, and all the other newbee fertilizing errors. At the very most they MIGHT experience a slight nitrogen deficiency, but that's simple to correct with an inexpensive all purpose fertilizer.
YOU DO NOT NEED ANY OF THE HIGH PRICED, MULTIPLE PART, NEED-A-CHART, FERTILIZERS UNLESS YOU'RE GROWING HYDROPONICALLY.
Do not believe the salespeople. They're supposed to 'sell' you stuff.
Everythings already in the soil. Additional nutes are only needed to supplement the soil during the grow. An intermediate level or above grower may not have to fertilize at all during their soil grow, but we won't get into that here.
A ph of 7 is neutral. If your water is coming out of the tap at 7 or there abouts, it is absolutely fine to use in soil with no adjusting. For hydro it is way too alkaline, but it's right-on for soil use.
The soil it's self will do any adjusting it needs all on it's own, (called Buffering). Unless the grower is over-doing it on additives, which is what ALWAYS happens when they unknowingly, yet deliberately over complicate things, ph should not be an issue in soil.
I'll say it again, PH should be a non-issue in soil. If you develop a ph issue in soil IT IS BECAUSE OF SOMETHING THE GROWER DID WRONG.