Trying to Install 12.2.3 on Local Laptop

Hi, i am planning to installEBS R12.2.3 Vision Demo on my Local windows OS with the following spec;

I be installing on Virtual Box 5.1

8GB RAM

Processsor:Core i5

1TB hdd

My question is;

1- After downloading and unzipping the files, how do i concatenate the files so as to import it to virtual Box

2- How long am I going to hve this free Vision demo instance

3-Has anyone used cygwig to || the downloaded files and if so do you have the script?

Thanks

Vit