Congrats!
I don't know anything about soccer. Camp invites from the colleges coaches? Excellent. Those are the camps to go to. Not the meat market camps, where you are invited for their profit. If he's invited to college A's camp, and college B,C,D, etc. will be there? Contact all of those colleges before camp, to introduce himself. You want your son on the list of players they are there to evaluate. If they're not looking at him, they may not see him. Make sure he's seen. Even if they don't respond, get to camp early, and introduce himself. They may already know who he is.
It is up to your son to make the contacts. They can't call him, but he can call them. Twitter is a must. Doesn't fall into the can't call/email NCAA rules. (nor does instagram, facetime, etc..)
The evaluation was nice. Does it carry any weight to a D1 coach? Send it, either way. It's OK to send an email, but if its a mass mailed one, most won't even open it. Personal email. They can't respond, depending on grade/period. Tweet them. Call them. Pin it on his twitter.
Follow/reach out the recruiter for his area, for his target schools. Don't limit yourself to D1. They decide if he's D1, not you. Don't big time anyone.
There are national scouts for football, that grade/rate players like the evaluation your son received. Is there a national version of this for soccer? Find out.
The vid. For football, it's best plays first, no wasted time. You may only have the coaches attention for 15-30 seconds. On the first clip, there are 5 wasted seconds, at the beginning of the clip. Dunno how soccer clips work, but the dribble up, before he kicks it up, may be unnecessary? Start- Kick up in air- Shot - Save - BOOM... next. (nice save, BTW) Now you have their attention. Prolly just splitting hairs, but you really have minimal time to catch their eye. They could watch 100 of these a day. Value their time. Introduction? You care about him. For now, they only care if he can play soccer. Introduce himself, when they tweet him to call.
Let your son do the talking. It's his recruitment. Not yours.
Best of Luck!