Everyone goes for lamps, just like everyone goes for tanks.

Personally I really dislike the idea of using a lamp for a number of reasons. First, most snakes don't like to be exposed in glaring light. They like darkness and to feel hidden. Second, if your temps go down to 68 at night, that means the lamp needs to be on 24/7, and I doubt you're going to like that yourself. Third, switching thermostats tend to shorten the lives of incandescent bulbs. That can be mitigated to an extent by using a dimmer, but now your getting complicated.

If money is a thing, I would go with a ceramic heat emitter (CHE). You can pick them up at any big box pet store, along with a metal dome to position it on top of the enclosure. But don't buy the mandatory thermostat there! They charge WAY above online prices.

I'm pretty sure that, just as for an incandescent bulb, a switching thermostat will also shorten the life of a CHE. Therefore, you may want to look into proportional thermostats. Herpstat is the go to for most of the snake keeping community, and with good reason. They have single channel thermostat for $79;

https://www.spyderrobotics.com/index...products_id=75

Proportional is the better option as it gradually ramps up power slowly and only to the level needed to maintain the desired temperature. It may run the heating element constantly, but only at 30% power, and running at only 30% (or so) is going to cause the heating element to last a long time. A switching thermostat is on/off (full power or off). All that on/off, on/off can wear down heating elements pretty quickly.

If money isn't an issue, I'd use a radiant heat panel (RHP), but that would likely necessitate a different enclosure. Maybe something to consider for the future, depending on your own circumstances.

Keep the questions coming!