revise tts dataset

I'm looking for someone to help me revise my Spanish (Spain accent) Text-to-Speech (TTS) dataset. The quality of the dataset is currently in need of improvement, so I'd like to find a freelancer who can focus on revising the accuracy of the transcriptions as well as working on improving the sound quality. The revised TTS dataset should be in both audio and text file formats. We also need revision of audiobooks we are currently creating for the clients.