You're onsite, right? Can you do the EEMH at 6am? So many people will head towards Galaxy's Edge you will have a good shot at TSL. I wouldn't be surprised if they had separate lines for GE and the rest of the park.
Otherwise, we prefer riding it at night because of all the lights, plus it won't be so hot. HS is open till 10pm each day, maybe you can hop on a bit before close? Or during Fantasmic. On the subject of skipping it, my 5 and 7 year olds liked it, but my husband and I don't think it's worth the hype. It's a very smooth and pleasant ride, but it's super short and not worth the crazy lines IMO.