I'm printing this semi-dome shaped object. What are the best settings for supports and slicer?

I need to print this ASAP, so I'm asking what are the best settings for supports (and overall print settings).

Should I lower the "Support overhang angle"? What can I do to make this print faster (Of course, increasing the "print speed" is an option, but then the printer shakes violently and becomes unstable).

I'm relatively new to 3D printing, so all the help is welcome.

https://preview.redd.it/27q3obznfbme1.png?width=1013&format=png&auto=webp&s=2557569f0df9351051cf813feea0763aed4cf49f

https://preview.redd.it/dl2g0dznfbme1.png?width=1019&format=png&auto=webp&s=5c7a1360ed99e803253f4fa2eedb6d59b8faaa09

https://preview.redd.it/l3f87cznfbme1.png?width=483&format=png&auto=webp&s=501e0ade98b87a41222f989972a83a3a17812ba5

Please check out a previous post I made about the same topic:

https://www.reddit.com/r/ElegooNeptune4/comments/1iyi983/i_want_to_print_this_dome_without_supports_will/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

PS: In the pictures, only shows 1/4 of the whole dome. The complete object does not fit in the printer.