I have 1.3k domains and I have to say, Domain Parking won't do anything unless you have a good amount of generic .com or ccTLD domains. It doesn't take time to setup: that's the beauty of domain parking. Also, only taking into consideration type-in traffic, you will usually make way more with domain parking than with a minisite.
Minisites and blogs are what use to work - but it usually takes months for them to start getting decent traffic (with exceptions).
I'm now thinking of redirecting all my domains on a specific niche to a single CPA offer, and doing the same with other niches if it work out well.