You've described a high pressure, low volume setup. Typically, low pressure, high volume pumps are used to inflate rafts and cats. So performance may be not what you expect -- it could take a long time to inflate the tubes of your cat.
Second concern. Some compressors rely on oil-based lubrication, which can be conveyed in small quantities in the compressed air -- along with the inevitable moisture from the compression process. You might want to think about whether the inside of your tubes will like either oil or water introduced in that way.
Others likely will have different thoughts. But as I see it, a small, cheap inverter and a 120 volt yard blower would give you high volume at a low pressure, and remove any of the above possible concerns.