I would like to pay for the work in 3 milestone payments, to ensure that the freelancer is paid as work is released, and also to improve the turnaround time (the transcription is needed ASAP!) so that additional analysis can be conducted from the transcriptions.
... so that additional analysis can be conducted from the transcriptions.
In terms of the format of the transcription, there is no need for time description or discourse analysis. ... I would prefer a single, dedicated individual, who has extensive transcription experience, to ensure both accuracy and consistency of the transcriptions. In addition, you must be available to start work immediately, and can be contacted via phone, skype or e-mail.