Project Proposal: Building a Portable SBC Gaming Console with DFRobot IPS Display

Hi everyone,
I’ve been a long-time follower of the DFRobot community and have used many of your sensors for my previous robotics projects. Recently, I’ve decided to shift gears and start a new DIY project: a portable, high-performance gaming handheld powered by a Single Board Computer (SBC) like the LattePanda or Raspberry Pi 4.
My goal is to create a sleek, functional device that isn't just for retro emulation, but also capable of handling modern web-based applications. For the visual side, I am planning to use the DFRobot 7" IPS Capacitive Touch Display because of its vibrant colors and easy integration via HDMI. For the input, I'll be using the Gravity: Digital Push Buttons and perhaps a custom 3D-printed enclosure to house everything together with a 10,000mAh Li-ion battery shield.
One of the specific use cases I have in mind for this device is testing its performance under various network conditions. For instance, when I’m at school or in an environment with restricted internet access, I want to see how the hardware handles low-latency browser gaming. I’m planning to test the rendering speed of HTML5 and WebGL by accessing a popular Unblocked Games portal to see if the SBC can maintain a consistent 60 FPS without overheating. This will be a great benchmark for heat dissipation and GPU optimization on such a small form factor.
I have a few questions for the experts here:
Regarding power management: Do you recommend using a dedicated UPS power module for the LattePanda, or should I build a custom 18650 battery pack with a balancing BMS?
Cooling: Given the limited space in a handheld case, would the DFRobot cooling fan be sufficient, or should I look into a passive copper heatsink solution to avoid fan noise?
I would love to hear your thoughts on this project. If anyone has built something similar or has tips on optimizing Chromium performance for gaming on Linux-based SBCs, please let me know! I will be posting my schematics and code once the prototype is finished.