With the mesh lid have you are going to battle to get the temperatures right thoughout the tank.
Nearly everyone forgets that warmed air rises , this is because it's density decreases with temperature unless the air is trapped in an airtight container.
Hence as the basking globe warms the air in the tank it will instantly start to escape the tank to be replaced by colder more dense air ( cold air falls and pools ) . So essentially you are not getting as much benefit from the basking globe as you could if you made a very quick and easy change to the tank, instead you warming the ceiling of the roof where the tank is houses (which only benefits the spiders who likely live up there).
If you have solid lid that enclosed the tank ( with the exception of ventilation though vent holes - usually in the back or side of the tank ) you may find you can get away with an 80W heat source in a 4ft L x 2ft W x 16" T tank with a solid lid , but if the there is no lid you will be struggling even with a 150W heat source to get adequate temperatures.
Ditch the mesh lid , replace it with sheet of plywood ( only needs to be 6mm to 9mm thick ) as it's only supporting the light fittings and maybe some cabling and light bits & pieces .
Any good hardware shop will have a trade desk where you can ask they cut the plywood to size , they might even cut holes for the CHE and basking globe fittings / reflector domes to fit inside , but It's get rid of the dome reflectors ( retire them / mothball them ) and place a naked high temperature all ceramic light fitting under the plywood lid.
You can probably get away with MDF or melamine for the lid if plywood is too expensive for you.
The result will be the warmed air inside the tank created by the basking globe (and CHE) will be forced to circulate and provide heat via convection and you will not need nearly as powerful a heat source to maintain the desire tank temperatures and basking spot temperature as you do now .
I'd place the hide ( which appears to be either a plastic or wooden "Hubbahut" directly under the basking globe , the make very good basking platforms , move the / remove the hammock ( for now as it's not any benefit to the dragon ).
What exactly is the compact UVB globe ?
Brand ?
wattage ?
UVB rating ?
distance from the basking spot at this time ?
In very small tanks compact UVB globes are fine but they must be a very good brand and rated at least 10% UVB and 26W and be positioned no more than 8 inches from the basking spot ( if in a reflector dome or a micro or nano size reflector hood ).
I get very good results using 26W UVB200 globes in nanohoods in my 120L rearing tanks.