does it have cartoon graphics or otherwise look like it is marketed to some teenager? don't buy that one. LoL!
Stop worrying about synthetic or organic. those terms have no place in reality. even a college professor will admit that "organic" and "inorganic" chemistry is a silly and arbitrary line drawn in the sand. more about hubris and self-absorbed perspectives of geniuses .. even geniuses do dumb things.
even with a soil grow, i'd get a system that provides everything. typically these are labeled as a "hydroponic" fertilizer, but that really doesn't matter if you use it in soil unless it specifically says so, of which i have never heard.
if you do this, you don'thave to buy a bunch of supplements. part a, part b and some epsom salt -- more than one company offers such a thing. J.R. Peters is one of them with their jack's 3-2-1 system. You only need the 5-12-26 from jacks, the rest you can buy generic and save even more money. You can find this for ~$60 for a 25lbs bag. there are smaller options to test the stuff out and see if you like it -- JR or other brands etc.
Also, buy dry and mix. it'll save money, save storage space, and stores forerver for all intents and purposes. plus, can buy in bulk and pay pennies per gallon of fertilizer. (literally $0.04/gallon in most cases.)
25lbs bags are a commitment. Sinc eoyu use them in a 3:2 ration, it'd be better if you can find cal-nitrate 15-0-0 (or 15.5-0-0, but no secondary/trace nutrients! or you double up and that's bad) with ~16-17lbs, but you likely cannot. you can get an 8lbs epsom bag from walmart for $5.
You can find a 25lbs bag of cal nitrate for ~$30-$40. No idea what the smaller packages cost for either part. But, you spend ~$100 for ~4000gallons of ferts, which should last a few years. $2-3/month on ferts is best you can do, from what i can find.
plus, these types of products, not just jacks, are real AG products... not pot culture nonsense brands that charge an arm and a leg for a feed that guarantees you have to buy multiple other things to avoid simple and avoidable problems.