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The compulsion is neat. And the construct thing is really cool. But all in all, they're not the best thing you're getting from that bloodline. The thing that makes impossible so amazing are the bonus feats. What you're going to want to do, is take craft magical arms and armor. Then craft golem. The "Spontaneous Generation" class ability makes it so much easier to craft golems. Because you don't need to know all of those spells. Which is lovely for a sorcerer. They usually don't have enough spells, known for all the spells you need to make certain golems. Then you also have Craft magical arms and armor and craft wondrous items. So you basically get all of your items half off. And again don't need all the prerequisite spells because of Spontaneous Generation.
For spells I wouldn't focus on compulsion recommended. But would take some of the really good ones. I definitely wouldn't take a lot of feats for compulsion. Necromancy would be cool. You could have a bunch of undead, and a bunch of Golems. Then just send waves of heavy down on the DM. But remember to have a healthy dose of Transmutation, Evocation, and Congregation. with Conjuration you could then summon monster on top of all the things you have fighting for you. Then you basically have an impossible army of Golems, undead, and any other messed up stuff you want to summon. For this build I would avoid Illusion, Divination. Except the necessary spells like color spray, and phantasmal killer. Definitely take phantasmal killer. Remember the essential spells, Black tentacles, Fire ball, Chain lightning, Floating disk, Scorching ray, Overland flight, Dispel magic, all that good stuff.
The exact wording of your arcana is "Constructs are treated as living creatures for the purposes of determining which spells affect them." So that means you can use death effects on them. so pick up a few of those. Since constructs have no good saves, and no con score they will fail every save. This makes you especially deadly to creatures of the construct type.
I hope this helps