mobile

I have several outdated android smartphones laying around and would like to re-purpose one for an 8 year old.
The thing is, I cannot trust him not to install tons of adware and games on it and play it during school hours which will just cause trouble for everybody. What I'm thinking:

1. I need the ability to remotely enable/disable lock/unlock the phone and/or turn the phone on or off and/or time periods during which device is automatically locked or unlocked.


2. I need either a locked down modified cyanogen ROM (or equivalent) or I need to somehow setup everything from scratch.


3. GPS tracking (realtime constant monitoring isn't necessary but I'd like to be able to ping his location if I'm worried about him and maybe have some sort of perimeter alert system in case he strays into a dangerous neighborhood/gets kidnapped/whatever)


4. I also need to lockdown which contacts can be called/SMSed/telegramed/IMed/emailed


5. This kid is sharp, so if there is a way to circumvent these measures, he'll probably figure it out. But I'd like you're ideas and I'll try anyway. How would you go about this? If you're going to tell me I'm a horrible person for tracking my child, I know already. :o