How can I take my family with me after having company registration at the same time
You should include your family members into the company as the shareholders. For this reason you will need to purchase company with bigger share capital. Other wise, if you do not want to include your family members in to the company, you can invite your family members after 2 years of living in Europe. When parents will get residence permit, children under 18 years old, will get residence permit automatically.