This is a very fucked up situation as far as marriage, views and the sex is concerned. Your husband as you describe him seems like a Christian nationalist of some kind as he doesn't subscribe to any church and still deeply believes in the god of the bible. There can be serious complications with the development we take and the reaction a Christian may give. Some Christians may flip out when you do meditation, yoga,mantra chanting etc and be like "Devil,the devil!!!". And you certainly cannot hide from him forever that you do these practices. So basically you need to somehow go around this situation. I wouldn't recommend directly confronting your husband about this. But you can slowly and steadily talk to him and connect with him about your understanding of religion and history. Don't go full blown " I'm a satanist. Fuck Christ. Hail Satan" on him. High Priest Mageson has written detailed sermons about history, religion, reversal of ideals etc. You need to study in depth His sermons and try to connect the dots. You are looking for specific points such as reversal of the original religions into something bad. Labelling of the original gods into something bad. How Christianity was created by Judaism. Take notes. And HPMageson also mentions the names of the books about history and religion. If you have money you can buy some hardcover as in acharya s however most of it is on libgen.io . So that's how you can spark the interest of your husband in these things and make him see things in a different way and even if he doesn't change his ways at least you can freely do. This is however very risky,chances of massive arguments and problems are there. The easiest way is to actually bind him to prevent him from interfering with your satanic life in any way. Which can be a moral issue for some. Whatever you choose to do is your own choice. Your husband must be going for work and if you aren't at that time, you could meditate then. Which is very essential.
The second thing is with this kid situation. My intuition tells me you're white. And you have three kids so you must be proud of what you've accomplished for the white race. If your kids are small they can be initiated little by little into the occult and they will do better in all spheres of their life. Profess utmost secrecy for where we tread there is constant danger.
Your bisexual situation is very problematic and I don't think I can give you any advice on that. When you say your bisexual is it because you want your husband to accept your sexual orientation or you also want to have sex with a woman outside of marriage. Because that's certainly not something I can comment on. If he was an open minded fellow he could allow you in the latter or even have threesomes but this Christian identity may severely atrophy His ability. Something other members may be able to comment on or you need to figure out on your own.
Now to your occult situation. As your a newbie you need to start a meditation program, open the soul and get power. The 40 days meditation program is nearly where all newbies start so I'd recommend that. Then to go to intermediate you need to do the six months meditation program. After that with guidance of a demon and the plethora of meditations that they should guide you with you can go higher and higher. I have to warn you the 40 days meditation program is a little outdated and the sequence of the chakra opening are wrong in it. So follow the numbering on the official Jos website. These programs are available in the jos Library.
An introduction of changing your paradigm of mind by HPhoodedcobra is a must I believe,
https://www.ancient-forums.com/viewtopic.php?f=3&t=13724&hilit=Spiritual+satanism
https://www.dropbox.com/s/tbbcjfha6hvemf0/Satanic_FAQs.pdf?dl=1
The procedure for an easy binding is given here^^
Lastly you need to do the RTR daily. Its extremely important for your personal as well as the benefit of humanity. Those who do the RTR daily will exponentially increase their learning curve and spiritual power. You will be free of any bindings that hold you back. However be warned if you start the rtrs and advanced meditations without dedicating, terrible things can happen. So you need to dedicate if you haven't already.
Anyway welcome to our family and may you find peace,prosperity and happiness on this path.