LeoLady is wrong about the temps. 105 is a good basking spot temp. to shoot for, but, the cool end should be more like 75. At night down to 65 is fine.
Here is a good link for food.
http://www.beautifuldragons.503xtreme.com/Nutrition.html
Crickets should be fed twice a day in a size that is no bigger then the space between his eyes. The way you are doing the crickets is fine, feed him all he wants to eat. You should dust each meal but one with Calcium (No Phosphorus and No Vitamin A - Rep-Cal is good) and one meal a week with a multivitamin. Water should be always available but he may or may not drink it. You should mist or drop water on his nose at least once daily to make sure he stays hydrated. A weekly bath would be good too.
If he's active this late in the season it is very unlikely that he will brumate this year.
For UVB a Reptisun 5 is good if he is within 12" of the bulb. Otherwise a Reptisun 10 should be used if you have a fine screen top or he is further than 12" away. A 55 gal tank is 22" tall. A Reptisun 10 is good to 20".
The newspaper is fine and I would stick with that or paper towels, non-stick shelf liner, tile, or reptile carpet for a while. When is is bigger than 12" you could choose to change him to childrens play sand if you want. I would never recommend the gravel.