You don't need to be sorry for letting any of the forum members down. You didn't become a Muslim to make people happy, you became a Muslim because you believed in Islam. If you rushed into this decision, then you need to take a pause and figure things out. I don't know if you already have, but if you haven't, then ask questions about what makes your doubtful. And since you live in LA, there are a lot of masjids in Southern California. If you can ever get over to Orange County at some point, try to ask some imaams there if they'd be willing to make an appointment where you can meet them and ask them questions.
Why is it that you reject the hadith? And if you do, then how do you perform salaah or make wudhu? The Quran commands salaah, but the hadith tells you how many rakaah each salaah is, that surah Fatiha is required, etc, and with wudhu the hadith tells us how many times to wash each part of our body + the Quran doesn't mention gargling the mouth (unless I'm wrong about that). So do you accept those hadith and reject others, because it's fairly difficult to reject all and still be able to perform salaah.
Also, and I don't mean to come across as judgmental, but how can you love and respect Sayyidina Rasulullah (Salallahu Alayhi Wasallam) and reject his words? How do you resolve that contradiction? Also, the Quran repeatedly mentions to obey Allah and His Rasul, and obeying the Rasul comes from following the hadith. I'm not trying to push you over the edge and make you doubt the Quran too now, I'm only merely stating it's not that simple to detach the Quran from the Sunnah. The two go together.
Make sincere dua that Allah guides you to the path that He loves, and that He grants you knowledge the benefits you. I understand that it's not easy to embrace something you're not 100% comfortable with. But if you have even just a slight love for Sayyidina Rasulullah (Salallahu Alayhi Wasallam) seek guidance so that your heart can put at ease. There are answers for every doubt you have, you just have to seek it, so don't give up.
Sister dqsunday, have you tried wearing different fabrics for hijaab? Cotton might be better in the heat, and most probably lighter colors too.