I hope you were going to quarantine them in a separate tank for say 30 days, because if you were acclimating them without a drip into your show tank your nuts. From that store you probably have a 50-90% chance of bringing something home that you would regret dearly.
What I would have done is check ph, gh, kh, TDS levels before you open the bag. Then adjust the QT tank levels to match the bag water. Plus I would prime the fish bag at the store because toxic ammonia will already build even with a short run home, a long run would be a whole different story.
Again, QUARANTINE the fish, but first drip acclimate them for at least 1 hour or more with a slow drip line changing the water every 15-20 minutes, tiny amounts at a time.
The # 1 cause of early fish death during transport to other tanks is osmotic shock. TDS being # 1, Temp #2, followed by big changes in Kh, & gH, WITH PH BEING LESS critical as long as the change is not super fast. The cells of the fish can swell & explode causing quick death. They will drowned if the TDS falls too fast.
People , myself included have gotten away with flop & drop many times, but luck & levels may have been on my side. It is inhumane to subject fish to quick & sudden changes.
The fish should be in QT for at least 3 weeks, more if the matching target levels are way off. What's way off ? TDS from say 530 & target is 250. Gh is at 15 at store & your planted tank is 5.
My 3 cents.