Everyone is different. Some get lined out quickly others more or less.
Your large leaks are 0.0. Very good.
You can try a chin strap to keep your mouth closed, but many people do not tolerate it well. You might?
You are probably going to have to raise your pressures more. First get the APNEAS under control. (OA & HA)
I would not buy other equipment until you use up all options with this one. You haven't even come close to that.
I do not feel that I have enough knowledge to recommend settings for you.
Others on here do. They will show up and help you out with that.

JPB
Fill out your equipment list ; machine, mask, ect.
This is needed.
Saves time for everyone.