south or on the Med coast where there is a Polish community?
There are Poles all over Spain. The real question is why are you moving to Spain weather or business opportunities?
If it is for the weather then I would suggest Costa del Sol the least expensive places are Benidorm and Fuengirola a two bed flat will run you at 500/600 Euro a month. Jobs I guess the only type you will get this time of year is telemarketing English or Polish, the local expat paper is surinenglish.com go to the classified ads for jobs and do your market research.
In the north you could try Barcelona there are lots of English speakers there, with lots of foreign companies one of the local expat papers is the barcelona-metropolitan.com/blogs/the-informer although there are others as well.