i dont know if youre talking about a fish tank hood but you should for sure go with a screen lid so that you can place the UV bulb and heat bulb on top with no problems. the UV bulb is the long bulb and the heat bulb will go in the dome fixture. they now make compact UV bulb(spiral ones) that can be placed in the dome fixture but i would prefer using the long one for bigger or longer tanks. they need a hot side and cold side just like other reptiles and you can monitor the temps the same way as other reptiles using a digital thermometer. one on the hot side and one on the cold side works best. actually lifting the tank to clean it in a big sink or bathtub is going to be hard you may need another person to help you carry it but beardies arent that dirty and you really would need to clean is their waste. depending on what substrate you are using the cleaning methods will differ but if youre going to use sand then get a good sand sifter. one thing i can suggest to you is get a stand that will allow you to access the tank without standing on a chair. from my own experience, it gets really annoying if you always have to stand up on something to get in the tank to clean, feed or water changes or even just picking up the animal and putting it back.

and yes pet stores are ridiculous.

goodluck!