2500 a month seems a bit high. Mind you, depends on your lifestyle I suppose 😉
I work with kitchens, bedrooms and bathrooms and general interior rennovation work, including many skills and trades and charge about 80 euros a day. Working 5 days a week thats 400 euros a week. We live more than comfortably on this in Granada province.
What you need to look at is the Spanish average wages for similar work. Contact a few golf clubs and see what the going rate is based upon your expertise and experience.