I spent the first 15 years of my life in Dorset, but over on the slightly more developed side (Bournemouth) and it was a great place to live. You dont mention if you have kids or not, but if you do it would be a nice environment for them to grow up in, although they would no doubt get quite bored with the small town scenario.
Every time I go back to vsit the old folks (4-5 times a year), im always shocked by just how much it has changed for the worse (stag & hen doos, subways on every high street etc) but that seems to have happended to almost all seaside towns. Bridport wouldnt have the same extent of these issues.
Go and have a look, if nothing else its a nice place to visit for a couple of days.
And anyway, you must of had some inclination towards the place in order to apply for a job there??