I see nothing wrong with having a deer down and in sight, then continuing to hunt if you have the valid tags. **of course assuming this follows the law for your area**
A lot of guys I know will kill the first big doe they see in the morning, then wait it out and let other deer walk looking for a big buck.
**also assuming that temperature is not going to play a role in potentially losing meat to spoilage
"When a hunter is in a tree stand with high moral values and with the proper hunting ethics and richer for the experience, that hunter is 20 feet closer to God." ~Fred Bear