Instead of carrying the software on a USB, use the Creative Cloud to sync your projects. You can sign in to your Adobe account on any computer with Premiere Pro installed and immediately access your assets, preferences, and project files. System Requirements for 64-Bit Editing
Regardless of whether you use a standard or portable version, video editing requires significant hardware power. A 64-bit operating system is mandatory for modern versions of Premiere Pro to address enough RAM for 4K and HD workflows. Adobe Premiere Pro Portable 64 Bits