Yikes, you feed Strategy to a low workload horse? That's way more than he needs. I would only feed Strategy to my eventer during show season. It's a performance feed, not meant for a horse that is only getting lunged. Ideally, if you can get by without grain feeds, that's best. And if your horse is 1200 lbs it sounds like his weight is fine. Many people put too much stock in grain feeds, most pleasure horses are just fine on hay. Why are you so bent on feeding him grain? Is there any reason (weight loss, lack of energy, etc.) that makes you think he needs it? If it were my horse, I would take all the grain out and see how he does on hay and grass. When you actually do start working him hard, then re-evaluate if you even need it. If you're really determined to feed him grain, look at one of the pleasure horse feeds like Omelene 100. Advantage is also a good feed for a working horse and does not get them as hot, but it's not that palatable to many horses. Personally, I feed Elk Grove Milling Stable Mix to my horses, and they get ridden 6 times a week for 1-2 hours.
The basest horn of his hoof is more musical than the pipe of Hermes.
He's of the color of the nutmeg and of the heart of the ginger.
His neigh is like the bidding of a monarch,
And his countenance enforces homage.
- William Shakespeare