Have you done solo traveling before? I'll be heading to TDR solo as well but I don't really see it as that different than when I did my solo trips to WDW and DLR. Perhaps the main difference is that we don't have that extra person to lean on when we are trying to figure things out and must rely on ourselves. Otherwise, it's still Disney. Do lots of research before you go, look at the maps, read up on the shows and parades. See what the food offerings are so you are prepared ahead of time of what's available. As a solo, we can be more flexible with your schedule but it's always good to make a brief plan. We also get the benefit of moving around a lot quicker.
Keep note that Indiana Jones and Raging Spirits have single rider lines so you won't need a FP for them. Also there are some closures at TDL during your time there so also look into that.