Pay will be per 1 january: 48350 euro p/y. You have to pay social security in the UK (about 8%) and tax in portugal (25%). So that leaves you with...... hmm where is my calculator. Well you can figure it out.
New schedule 6 on 5 off, or 7 on 6 off, but never more then 50 days per quarter. Bottem line is 200 workdays - 22 holiday is 178 days per year to work and the rest at home.