As others have said, you should probably just wait till GW releases the A9LH plugin so your GW can take advantage of the quick boot time. I assume they will have a plugin so you can turn your 3ds on, and within seconds the dragon will display and you will boot right into emunand in GW mode. (With 100% bootrate)
You can still try out CFW to see the pros and cons yourself. One thing you will notice right away that installing CIA's is very time consuming compared to just copying files over like you do with your GW. With CFW, you still have to copy everything over, but then you have to install it on the 3DS on top of it, so it winds up being 4+ times more time consuming then just copying and playing like you get with the GW.. It really all depends on how you use your 3DS. If you are an online player, I believe CFW has an edge in that regard. If you play the same things for months and don't change things much, then you might not mind CFW. If you do allot of changing of games and don't play online, you might like GW a heck of allot more. (My case)