Please stop saying "I know what I'm getting into" as right now you sounds repetitive, and like you can't come up with anything else. And obviously you don't know what your getting into if your keeping this stock and thinking it is a safe stock. Aqvisor isn't a very accurate website and they don't take many things into consideration when generating the stock. Please for now on don't use that website, stock is calculated using
- Bio load of the fish
Whether or not it schools gender of the fish as some fish species, one gender is larger
How large the tank is
If its cycled
Footprint of the tank
Aqvisor only takes a few of these into consideration. I recommend using this forum as a tool, there are quite a few knowledgable members that can help you if you just listen to them, right now it seems like you at just blocking us out and repeating yourself "I know what I'm getting into" , "I know what I'm getting into" , "I know what I'm getting into" .
The reason this won't work is because Betta Splendens are a very aggressive breed of fish and are meant to be that way due to breeding. Females can be just as aggressive as males. While females don't really make a territory like males do they still need there own space. This is why if you have a fifty gallon tank with double filteration. Yu can only have 25 females. I would only suggest a maximum of 6 females in your tank, 8 is too many in my opinion due to limited space. And it seems like you think that heavily planted your tank will make a big difference, honestly it won't, as sororities should always be heavily planted. Your's will be the same as everybody else's that has one in a 10 gallon. A maximum if five
And did I hear you don't have a filter. This is another need unless you want to do daily water changes to minimize ammonia which is very toxic to fish. Having shrimp in that type of habitat would most likely kill them, I would recommend a filter rated for 20+ gallons due to your stock (6 females and 10 ghost shrimp). A filter is a need in my opinion because of how fast ammonia and other toxic substances will build up. Please research the aquarium nitrogen cycle. It's very simple and only takes 1-2 months.
Also, are you going to heat this tank, as I'm sure your aware that bettas are tropical fish right, originating from mainly Thailand. Because, of course. This is what you said. "I know what your getting into"