Does the Sansi emit dry heat?
Yes, but that shouldn't be a problem. Most of the heat from that light goes upward; very little will reach the ficus unless the leaves are all up in its business.
I have a mistking and a uvb and basking bulbs and a Sansi growlight. I'll have a Jackson's Xanth soon. How often should lights be on and off?
Plant light: 12 on/12 off.
UVB: Some do 12/12; I do an hour after "lights-on" until an hour before "lights-off" because very little (if any) UVB gets through the early morning & late afternoon atmosphere.
This has an added bonus of extending the life of the UVB bulb by up to 2 months.
Basking light: Opinions on this vary, and some are experimenting. You can run it 12/12, and if your chameleon doesn't want it, s/he'll probably just not perch under it. If you find your cham only basks during certain hours, you can time it for that. Any time the enclosure temp reaches or exceeds basking temperature, there's no need to have the basking light on, so some keepers combine the basking timer with a thermostatic control.
I would let the care sheets and archives be my guide.
https://chameleonacademy.com/jacksons-chameleon-care/
https://www.chameleonforums.com/search/1400909/?q=jackson's+basking&c[title_only]=1&o=relevance
And the same with the mistking. How much and how often? With the longevity of the ficus plants in mind. thanks
That second part could be tricky, but plenty of people do it successfully.
IMO, there are 2 parts to misting—duration and frequency.
Since I use distilled water (distilled or RO are recommended by MistKing), I don't want to waste a lot just running down the drain. With everything else in the enclosure in-place, I manually turned on the mister and let it run until water began running down the drain. This came out to 2 min., so that is my duration.
Frequency—like establishing the basking site—may be a trial & error process, and depends on several variables, including ambient temp & humidity, how challenging target temp & humidity are/can be to achieve & maintain, how long it takes for the misted enclosure to completely dry out, and whether or not you use a fogger. At the minimum, mist at/near lights-on & lights-off. If you don't use a dripper, I would mist at/near noon to make sure drinking water is available.
Nighttime misting sessions depend on use of a fogger and if you're achieving & maintaining nighttime humidity.
Sorry there are no "one-size-fits-all" answers to this.