Looks like your snake has settled in well. Put the water dish in the middle, and get some better hides. Log hides suck. The tighter and darker the hide, the happier the snake. You can use things like flower pot bases, plastic trays from tv dinners, empty kleenex boxes.. etc.

Go to walmart/target/whatever and get an indoor/outdoor thermometer/hygrometer. They are pretty inexpensive, and will give you accurate readings of temperature and humidity. Humidity should be 50-60%. If you find the humidity to be very low, the culprit is your lamp. I have 22 snakes and no lamps. To keep the cool side temperatures up you may need a second heating pad. You didn't mention if you have a thermostat on the heating pad.. if you don't, you should. If you measure the temps right on the glass, you may be surprised to find readings of 120-130 degrees - a dangerous range. Go to mgreptiles.com for quality thermostats. Matt is a very helpful guy too, he can help you pick the right items.

You can try a prekilled mouse, but don't be surprised if your snake refuses it. If live rodents are easy for you to obtain, there is no reason not to continue with live.

Hope that helps.