I have solved my problem by following this article:
http://mikepowells.net/tag/pfsense/
Basically, I purchased a CF Micro Drive that allowed me to install the full version on pfsense. I don't know how long the Micro Drive will last so I am building a custom box to replace the ALIX boards. I am using an ITX board with dual NICs and an additions PCI slot for a DMZ if needed. The total cost is $348 which I don't think is to bad.
Thanks for all the input.
Todd