Depends on how many windows, sizes etc, if lintels are required, but I would budget 10-12k, you need to find out the reason for the damp, if the damp course has failed you are looking at another 5-10k depending on size of house and how far up the wall the damp goes, damp upstairs is likely to be roofing issues, replacements start at 8-10k.
New kitchen depends on what spec but you are probably looking at 3-5k for a decent spec.
If there is damp you also need to check the electrics.
I used to be a maintenance manager for a property firm so I have a good knowledge of costs etc.