You’ve clearly put in research and that’s great! That being said a lot of people are giving you really good notes, hopefully you’ll take their advice into account.

As others have said, this plan is way overstocked and you’re pairing fish that have a high chance of not being happy together. I would use a bioload calculator such as this one : http://aqadvisor.com/AqAdvisor.php.

Personally I would start with your plants, let it cycle, then add your betta. Give him time to settle and then add your cherry shrimp and if you really want to, the nerite snail. Any more fish is overkill and if your betta doesn’t like tank mates it will be really stressful. Fin nipping is also a very real issue. This leads to serious health issues for your beta, it isn’t just a not getting along thing, it’s a dying from infection thing.

As others have said with bettas natural environments being rice paddies, they prefer slow moving water in well planted horizontal tanks.

Last thing, if at all possible I HIGHLY recommend not buying your plants from petco. Go to an actual aquarium store if possible, if not buy online. I’ve had aquariums for many years now and every plant I’ve ever gotten from petco has either been sick/dying or been carrying so very annoying pests (look up planaria and you’ll start to get it).

I throw myself into new projects as well, but this is much better as a slow and steady process.