Doesn't seem like the most efficient set for SRing, with that damage range the target will have >1 HP left a lot of the time, even with bad IVs, and it won't work if you're going for Hasty. The 3 turns set up seems like a waste too.
I like to give HP and speed testing to 2 different Pokemon, a fast Final Gambit mon (like Accelgor) with 1 less HP than the targets max, and any random thing for speed. If the HP IV is 29 or less it dies and you know to SR (takes up 3 party slots rather than 2, but Lysandre is so bad that doesn't really matter).