@DrJacoby ,
How can someone new approach parking... that is a very good question and it requires a rather complicated answer because of one thing: bad traffic.
If traffic was 'clean' (ie. if every single visit was an actual human that seeks a product, etc.) things would be easy; you would choose 2-3 tools that would do the job and, by following the metrics, you would have found the gold.
Unfortunately, that is not the case and that is why it is hard to suggest any tool and/or approach to anyone. There is so much crappy traffic out there, with bad actors destroying perfectly healthy domains, that only experience can filter them out.
So, should I suggest something that will 'burn' you out or something that will give you the wrong impression on what metrics to look for and what not? I really don't know.
eg. I could suggest to pay for MajSEO and look for high number of backlinks with a min.TF of 20-25 and a CF that is close to the TF value...
You would then pay for the tool, find domains that satisfy the conditions only to realise that most of them bring zero traffic and others *with exactly the same MajSEO metrics* bring loads of traffic but no revenue while others bring traffic with low revenue...etc. (you get the idea)
Everytime someone asks me for help, I struggle to do so because it seems that the only way to learn is to burn first, ie. try many different tools, combine them, fail a lot, etc.
The only thing I can say of help is to try every way possible that you think a domain can receive traffic.
Regarding the approach you have already taken,
-250 domains is a solid amount and will give you good stats but they must have some history for the stats to have any meaning. If those domains were intended solely for sale without any actual website that was built for them in the past you'll get nothing unless you accidentally find a type-in domain (rare but it happens).
-2018: It is good to know the basics but there is no need to look too far back. Parking constantly changes and what worked in the past might not necessarily work now. eg. in the past, backlinks were very important in bringing traffic, not so much now.
-Cracking the code: don't spent too much time on that imo. There is way too much lack of transparency and way too many middlemen for any formula to work all the time. As I mentioned earlier, what works now might not work in 2 years in the future.
Just realised the length of this post so I will stop now
