Lenovo PWR-G60 Installation

I purchased a Lenovo PWR-G60 and it had OpenWrt TP-Link TL-WR703N v1 LEDE Reboot SNAPSHOT r4657-bb4d500 already installed. I looked into updating to the latest version and saw that the TL-WR703N has 4MB flash/32MB ram, but the PWR-G60 has 16MB flash/64MB ram. Does anyone know if its possible to build custom image that will utilize all of the resources on the PWR-G60. Any help is appreciated, thanks!