My SRT setup and my Wild Edge Perch is definitely the lightest, smoothest, and fastest setup I have, once your throw line is in the tree. I can only imagine trying to toss my throw line in the dark on a morning hunt (I've gotten pretty good, but...)... I will be doing several pre-set paracord loops in areas that I may hunt. I don't really see it being an issue in the afternoon with plenty of light. I will second @sdoyle1, though, buy yourself a decent throw line cube! I'm getting rid of my basic setup since I now have the WesSpur mid-grade one.
Another option that I prefer is a Scuba Diver's guide line reel. you can pick one up on ebay for around $15-$20 and they fit in the side pocket of your pack. When you have your line over the limb/crotch.....just reel it up and let it hang, load your climbing line to the tag end and reel the throw line back over with your climing line! It's like putting it away while using it! Simple, compact and cheap....Just another idea. Be safe and have fun!!