The cage is too small for an adult bearded dragon. Most bearded dragons grow to 18" with some reaching 20" or more (especially the German Giants). Add in cage furniture and your dragon will find it hard to move around. The height of the cage can be between 18-24" fine.
If your dragon is already an adult and happens to be a small version or lost its tail due to some mishap, it may be fine in that cage...but I always recommend at least a 4'x2' of floor space for a single adult dragon. It promotes a much more active and 'happy' dragon. Not to mention its much easier giving a broader range of basking temps for your dragon to use.
The basking temp is high, only babies tend to favor the higher basking range...adults tend to bask in the 100F mark. A wide sloping basking area works best, with different areas of the basking spot falling between 95-115F. This allows the dragon more room to choose what basking temp he desires.
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PHLdyPayne