I think your best bet before you get too excited is to make some enquiries with mortgage lenders and see if/how much you would get. There is no point looking at £200,000 properties if you could only get £150,000. And remember that most banks/lenders are really cracking down at the moment, some aren't even offering re-mortgages to existing customers whose fixed rates have expired. And the fact that you would both have to start new jobs wouldn't make it any easier, they like to see that you have been in the jobs for as long as possible, and if there are any probationary periods to get over, that will only go against it even more.
TBH, I am not a finance expert, but I think you might be better off renting, at first. Until you both are happy in secure jobs, and until you know for sure that Witby is for you. Some places look lovely for holidays and trips but to live there can be dire. It would be awful for you to make it through all the mortgage process, then find 6 months later that actually you don't like it, and then not be able to sell due to the way the market is going at the moment.
Besides, if you rented for a while, and decided you wanted to stay, by then the house prices will have come down even more, so your mortgage wouldn't be so high.
Also I bet you could rent somewhere nice for about £500-£700 a month (depending on how nice you want it!) but a mortgage for £200,000 (by my very rough calculations) will cost you around £1200-£1400 a month. That is a lot of money!