No, the J2300 does NOT support JUNOS with enhanced services. None of the first generation J-Series routers support it. That includes J2300, J4300 and J6300. Only 2nd gen platforms support JUNOS with enhanced services. That includes J2320, J2350, J4350 and J6350.
Larger CF may be needed to upgrade to 9.1 through 9.3 versions of JUNOS. But there are two versions of JUNOS for J-Series. One is packet-based (junos-jseries image) and the other is JUNOS with enhanced services (junos-jsr image). The J2300 only supports junos-jseries image.
-Richard