Relocating to Porto

Hello!
My son will be starting his college career next year and we are looking into moving to Porto so he can go to the University of Porto. Both my son and my daughter speak Brazilian Portuguese, C1 and B2 levels so they will need tutoring to be up to speed in (Portugal) Portuguese.

I am an EFL teacher with Protected content experience and I have a CELTA. My degree is in Child Development from the US. I have EU and US citizenships and my kids have US and Colombian citizenships.

My question is: Do you think we would make it OK over in Portugal? I am worried about jobs for me and visas for my kids. My youngest is 16 but she homeschools so I don't know if getting a visa would be a problem.

Thank you so much for any and all information!!
Jennifer Sayle