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Whilst I do not necessarily share Andrews fears and welcome your response Paul; there are some big buts there, particularly around transport links between not only Whitfield and the Town Centre/Sea Front/Station but also the outlying villages. Whilst this is a 20 year proposal and a lot can change in that time, it will be difficult to get the transport companies to commit to links before there are any houses there.
It is very positive that Singledge Wood has been protected, what protections are you putting in place to prevent future urban sprawl and also to prevent anything other than small local community shops (post office, newsagent, convenience store)?
Which partners are you using for the "affordable housing" and any social housing that might go onto the development?
With regard to brown field applications, if you do not want Andrew's fear to be realised you need to find ways to prevent too much social housing being put on these sites.
Also what account has been made in your plans to accommodate additional students at primary, secondary and tertiary level within the town and district if you are adding 7-8,000 houses across the town and its surrounding area, this is potentially an increase of many thousands of students across all levels of the education system.
Finally, whilst I see there is a proposal to build a doctors surgery etc. up there, what does adding potentially another 20,000 people to the population of the town do for the arguments for a hospital of some kind within Dover?