64-128GB SSD is enough for you.
I suggest you to install squid as well, 150 devices accessing internet would be beneficial from squid proxy in general, especially when you only have slow ADSL connection. I did it once 8+ years ago, only 2M+5M ADSL and my pfSense with squid was serving 150-200 users without any issue, not to mention that I was still using spinning HDD as cache drive at that moment.
@jhancock:
Hi, I'm looking to purchase a SG-4860. I don't know if there is any value to having a 128GB SSD instead of the standard memory card.
The device is to be used for our medium sized office firewall/vpn. Around 150 devices internal.
I may want to eventually use some traffic/source database to filter malware.
I will certainly want to log traffic for purposes of understanding usage trends so I can decide on sensible bandwidth shaping policies.
I do not need to keep logs long term for audit/policing purposes.
So I'm asking if there will ever be a need for such storage? I haven't used pfSense in about 6 years so am not familiar with the disk usage needs for common features.
thanks, Jon