sorry to hear about your basilisk, a 60 gallon tank will be too large for a baby and too small for an adult, especially a female. the 75watt heat bulb should be enough to keep the tank warm enough, you need to make sure you have thermometers and hydrometers to make sure its warm enough (90-95 for basking area and 82-90 for the rest of the enclosure) and to also make sure you have high enough humidity for a red tail boa. the uvb bulb is not necessary for a boa. you will also need a separate tank/enclosure for feeding it in and to hold it daily to keep it calm and docile. if you really want a snake i think a ball python would be much more suited for a 65gallon tank. although i would get a species of turtle or another type of lizard if i were you since you already have a uvb.