I didn't read through the whole thread.
But if you are doubting Islam, I highly suggest listening to nouman ali khan's "quran for young adult" series in bayyinah tv. If you don't have money, sign up for a free account. That one will answer a lot of your questions inshaAllah, and also help you connect to the deen at an emotional level.
I think right now don't worry about following everything in Islam, focus on learning more about Allah (swt). His attributes, I really like the explanations here, as they help us to connect with our Rabb. Look at the names of Allah series at virtual mosque. virtualmosquedotcom/tag/names-of-allah/
Focus on connecting with Allah (swt), loving Him, and seeing His love manifested in your life.
While christianity is a feel good religion, a lot of things don't make sense. Islam not only make sense, it does appeal to the heart as well. So focus on connecting with Allah (swt).
What would matter for you to feel that emotional connection with the false God? or Son of God in this case? Would it matter in the afterlife?