sounds like you're fine...Doc's suggestion is rubbish.
I got along for many years on 8 gigs... as I moved into huge sample based Kontakt instruments where I wanted lots of large samples to be loaded and stay "resident" or on line for immediate access, I increased ram as I upgraded my system not out of need necessarily but to future proof...
Right now I'm using quite large orchestral templates and still am fine so haven't felt the need to add more ram. Also, Kontakt has a fairly decent system for loading partial samples and streaming the rest so you should be fine for a long time.
Better spend available funds on things like SSD's, which are also way cheap at the moment. These can be reused as you upgrade down the road. Replacing your motherboard, cpu, and ram is no cheap adventure... Better to wait until you are slamming your cpu with some of the cpu hungry vsts out there...you'll know that before ram becomes an issue...
Enjoy!
BTW, I'd suggest adding your system specs and other aspects of your rig to you sig, as I and others have done... it will help down the road in responding to many of the future questions you might have without us having to ask those questions.