LDO Voltage Regulator - Will there be an issue
It is a lot. Even large packages have a listed thermal resistance from junction to ambient of about 65K/W. Small packages are more than double that. Try not to use a linear regultaor step something down by more than a few volts.

Your LDO is listed as 63K/W or 235K/W depending on the package you choose. That's really hot.