rob, if you can afford to keep the Sig do it. Who know's where youll be 20 years from now. i have only sold 2 guns. One was a S&W 4006 and the other my GSG-5. I solf the 4006 cuz it was junk. I sold the GSG as a favor for a begging friend.
Back in 92 or so I bought a Colt Sporter Match HBAR for $650. Any idea what that would cost new in 2013? Same with my Desert Eagle. They now cost double what i paid. My list is long. Lastly save it for your boy.
When Im dead youll thank me for this advice