Heck yea it will do 350 easily...it'll get go well over 400, just start with more lit. 3/4 of the basket unlit and the rest lit..it'll get hot quick.
Dont know if my uds will go that high.
You sure know your searing level sure will...lol I've never tried to get the smoking level up that high.
Can I get 500 out of it?