Well, I don't think 24-26C is going to kill yeast, but it probably won't make great tasting beer. It's certainly high, though...too high. I'm thinking 1.016 is pretty decent for a FG, depending on the OG, but it's probably close to done. I'm of the opinion that OG/FG are mostly just suggestions/goals, but unless you're way off, it's probably fine. Let your beer sit for a bit longer (minimum 2-3 weeks, or take your measurements until 3 days of no change) and then bottle. It'll probably be fine, just might taste a little off from the high fermentation.