pfSense

I am loading a number of ISO images and files onto \tftpboot for use with the TFTP package and pxelinux but find the 1.8g of space on the 4g image is limiting the usability. (currently have about 1.87g of stuff I want to put on the TFTP server)
I currently have a 32gb SSD installed on the PC and could do a normal install but prefer both the extra security of the RO nanobsd filesystem as well as how it limits the writes to the SSD to extend hardware life.
Can 8g or 16g images be added to the regular nanobsd releases to accommodate this scenario? (flash is always getting cheaper and larger so I cant see it hurting anything)

I am currently using pfSense-2.2.3-RELEASE-4g-amd64-nanobsd-vga.img.gz

Thanks for taking the time to read/review this request.