Depression is useful and you wouldn't want to miss it.

Depression is like closing your eyes. Antidepressants/anxiolytics are like having them closed while believing you can see.

Antidepressants/anxiolytics might give you a feeling you are free, antipsychotics might allow you to actually be free. They may give you a feeling of control.

Antidepressants/anxiolytics allow you to move, antipsychotics allow you to know where you're going.

Bit simplistic, but hopefully useful analogies.

You can use an atypical antipsychotic or a typical antipsychotic and an antidepressant, since they would do (basically) the same things. But there should be a balance. An imbalance is likely to be greater than a specific supposed (but logical) chemical imbalance when you are not manic or depressed. Atypical antipsychotics are quite good at keeping a balance, I believe.

I think an atypical together with typical antipsychotic might still be better, giving a finer balance, in some cases. That also means that using an atypical antipsychotic together with an antidepressant might cause an even greater imbalance.

Addiction/dependence is probably far less likely when using antipsychotics, just logically. There is of course very much (anecdotal) evidence to support it.

All meds are second best. Best would be to have an accepting and accommodating society. A less normative society. Much can also be improved by embracing BP, not dissociating yourself from mania and/or depression, completely.