i am building a new enclosure for my red tail, it'll be 4'x5'x2' and i was wonderind about how much venting i should put on it, i want the humidity around 60%. i was also thinking of using a ceramic heater above one of the shelves for a basking ares but i was wondering if that will produce enough heat to keep the rest of the enclosure around 83-86 while the basking is at around 90 - 95 will this work or should i use some other het source as well, any help and all ideas would be appreciated

thanks derek