I have a little tip to make a quiet track loop : Using a fade-out on the reverb at the end of the track. Of course, it works better if you have about 1 second without any instrument playing, but it works most of the time. I haven't tried on action cues though, I always try to avoid the issue instead.
About orchestral libraries, EWQLSO is a good entry line product, and is quite often at -50%, but you'll very soon feel really limited with it. CineSymphony LITE is $400, but you can get a -50% discount if you're a student, and even if it's a cut-down version of CineSamples' other orchestral libraries, it's awesome, especially compared to EWQLSO. There are more velocity & dynamic layers, which helps to get a more "alive" sound.
But actually, more than using good orchestral sound libraries, the most important thing is to make them sound right. And everything helps : The orchestration and context is at least as important as the rest. In Home, the orchestra is actually almost drowned into solo instruments - and this is these solo instruments that make this track live. They bring all the attention to them, and you don't even notice that the orchestra behind doesn't have a true legato, for example. Of course, it works only if your solo instruments are able to deliver a convincing sound.
Embertone solo strings are great, but have their weaknesses as well (the controllable vibrato, for example, is great for expression, but not always for realism). I highly recommend them, but before purchasing something else, I'd wait to see how CineStrings SOLO will sound like - it's been announced some days ago by CineSamples, and since the legato cello patch from Tina Guo already had an awesome sound, I expect something incredible.
And for the flutes from Embertone... Well, if you're looking for great, cheap instruments, go for it. The Shire Whistle that you can hear in both Home and Leaving is among my favorite instruments, and I bought it for only $5, because I received a discount code some days before purchasing it. And I'd happily buy it again, even at its full price ($20). You'll need the full version of Kontakt to use it, though, as well as most of their less expensive instruments.
Oh, and about the bad news I talked about in the description of the track, things seemed to get a little bit better lately, but well.. When someone in your family has cancer, you already know that most of the time, things will only get worse over time.
Anyway, thanks for your message ! ;)