I homeschooled my eldest daughter during her kindergarten year. We tried public school the next year & were able to enroll her with no issues. Infact, she was academically ahead in her reading & on par with everything else. In the state of Texas, kindergarten is not mandatory so if you decide to homeschool now & enroll in public later, you won't have to do anything special as far as testing, paperwork, etc.
Homeschooling kindergarten is quite easy & very fun. Half Price Books is a great resource for educational material. I recently found www.enchantedlearning.com, which offers loads of worksheets, lesson ideas & projects for an annual fee of $20. Mardel has really awesome stuff, but can get expensive.
There is soooo much information on the web to help you get going. Read, read, read & good luck with your decision!
Oh! Wanted to add that during the year Madison went to public school, she was sick ALL THE TIME. Infact, she missed so many days because I would not send my sick child to school that she was in danger of being held back. She was allowed to move up to 2nd grade, but we decided to go back to homeschooling.