The next question is when do you want the aircraft to represent? Out of the box, the Academy kit (minus the .50 cals in the doors, they were only tested in this position and not used operationally) represents an early '90s MH-60G under AFSOC. The Cobra Company set will allow you to build anything from a '90s MH-60G to pretty much a current HH-60G (minus the external gun and ammo can mounts -- for now anyways.
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).
That brings up the next question...is it going to be an MH-60G or an HH-60G? MH-60G and an HH-60G are the same aircraft. The name changed depending on who in the USAF they fell under. When they were under AFSOC (Air Force Special Operations Command), they were called MH for Multi-Mission Helicopter. When under ACC (Air Combat Command), they were labeled HH, the designation for a Rescue Helicopter.
Here are a few options.
You could do one of the few desert camo (brown and sand) MH-60Gs from the 55th Spec Ops Wing during ODS ('90-'91).
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You could also go with an early to mid '90s Euro 1 camo (dark green, medium green, and medium gray) scheme as you posted earlier in your pic.
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To make a later version, you have to add some things. A good start, as I have said, is to get the Cobra Company
MH/HH-60G update set.
This pic shows most of the latest upgrades for more current HH-60Gs, including the external weapons and ammo can mounts.
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My HH-60G is based on this helo from Iraq in 2003 stationed out of Davis-Monthan AFB, NM. It has a camo scheme very similar to the older 3-color (sand, brown, and khaki green) DCU uniforms worn at the time. Only a few were painted in this camo scheme as well.
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Most current ones are painted in AFSOC Grey (Gunship grey, FS 36118 is really close).
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To muddy the waters even more, the color schemes are not a definitive indicator of time and type of aircraft. There are still Euro 1 camo HH-60Gs with most, if not all of the block 152 upgrades flying. The AFSOC Grey repaint usually occurs when it goes in for depot level rebuild. Some units and/or contractors are able to add the different upgrade parts w/out a depot level rebuild. So repaints are slow to come.
Also, some have the newer, center nose mounted (a.k.a snoopy nose) weather radar and others still have the lower left offset weather radar in both Euro 1 camo and AFSOC Grey. The same is the case for the newer, external weapons and ammo can mounts as well.
The best bet is to find a picture of one you want to build and copy it. The features have changed quite a bit and still change often as technology and tactics change.
Good luck on it and let me know if you have any more questions.