Hi,
I would recommend to look at long term consequences rather then existing ones.You never know when your setup could need more ipsec peers ( which would essentially result in migration to another device again )....
What you are missing by paying 350$ less ( other then ipsec peers.... :)
DMZ support, Stateless Active/Standby high availability, Dual ISP support.
So,you can have a dmz with this license,you can add one more asa for high availability and you can have 2 isp's terminating on asa so thatr if one fails,other one takes over automatically.
Please rate if helpful/
HTH,
Sushil
Regards,
Sushil