It sounds like he's being worked with well and learning proper ground manners at a good age.
I honestly wouldn't worry about lunging right now at one. I would lightly introduce that more into his two's when he's older and more built in his legs and joints.
As for now, I would just walk him over cavalettis, and that should be enough for him.
I understand overly intelligent horses. I own one. They do indeed get bored very easily. With a horse like that, I'm telling you through experience DON'T overdue a session. Short, sweet and productive with them. You end up with a very sour horse, if they keep doing the same thing for thirty minutes. If they do it right once, praise them, leave it alone, and move on.
Mine is 14 now, and has calmed down considerably, and really settled into his work routine. But I still have to mix it up for him. It can be something as simple as weaving through cones to satisfy him for about five minutes. Nothing is over the top with him.
You can spread the poles all over the arena, and as you go, keep making up patterns. Introduce things like tarps and flags, to get him used to that. Get him respecting pressure to the line. You can work on bending already with some side stretches. At a year old, you have to be concerned about over working their still soft and sensitive joints and tissues, but there's still sooo much to do with them.
When you say spread out ten minute sessions- that's perfect. Again, short and sweet.
"You're just as sane as I am."~Luna Lovegood.