my son (actually all three of my boys) went to pre school at church, they were all ready for kindergarden when the time came. they currently go to a charter school now which is a good opportunity for us but they would have been ready for kinder, regardless of where they went to school.
in addition to this you mentioned that you are trying to teach her to read, which shows that you are willing to advocate for your daughter and will help her with any gaps she may or may not have in her educations. If you are worried that your child may not be ready for Kinder if she goes to a basic preschool program see if you can get an appointment with one of the kinder teachers at the school she will be attending, and ask them for some guide lines about what they will need to know entering Kindergarden and you can work form there to be sure she is learning what she needs to be prepared.
personally we went with the less expensive route because that was what we could afford, and we don't regret our choice nor do we feel that we missed out on anything, and yes our children are quite bright, and have all excelled in their own areas at school, one is a reader, one is a math whiz and the last still has to find his place but so far his Kinder teacher said that he entered school already reading where he needs to be when he finishes Kindergarden...