Okay guys, I'm pretty much confused. Do you think I should flash the 16.11 or 18.11 and patch the other things manually? Where can I find e.g. the HQ-Youtube patch and how can I flash it? The same as flashing a custom rom?
I would suggest go for 16.11 ROM. It is stable ROM with no issues with Camera app and even Youtube HQ works (may be S/W encoding), but it works. You don't need any other patch.