You should be earning double. Do your research and you will see what the going rate is in your location. You are in a good position to get that pay rise, beca

You should be earning double. Do your research and you will see what the going rate is in your location. You are in a good position to get that pay rise, because your current employer would have to backfill and pay market rates anyway. In terms of your notice period - if you don't like working there anymore, quit now and then look for jobs after month 1 or 2, so that would give mean your new employer would have to wait only a month. Or consider contracting.