hey! upgraded sages cage! i bet he will be happy.
well, i would assume by the pictures and size of the cage he is an adult now.
I Keep my cages in the low to mid 90's for basking.
Now the cage should drop in temperature as you go down.
all the way down to room temperature at the bottom.
Humidity should be kept around 40%.
It should go up during misting sessions. maybe as high as 70%
Dont get worried if he freaks out in his new cage.
Veileds are very territorial and when you change their home around they tend to stress out for a few days.
also why you are changing to a larger cage you may want to replace his UVB light. I'm not sure how old it is, but just for better penetration in a large cage it is a good thing to do. average life span on a Reptisun tube is 6 months