Rim Question

[Mr Handy]

So I have been thinking about my rim options... I am going to stick with 6 lug, and plan to do disks up front and 2.5" drop spindles. so I decided I think some 15x8 would be about right.
checking craigslist and a come across a set of Chevy 6 lug wheels. Being Easter I figure I will call tomorrow and see if he still has them and some other specs, but they look pretty wide to me in the pic. $50 sounds good to if they are right.

Here is the question. I want to run baby moons... Obviously there are no outer clips on these rims but they have small holes in the lug circle, are these for cap clips? and will these work for me if everything is right... ok so I guess there is more then one question here

Can I run baby moons on these?
Do I need to check another measurement? Axle hole?
Am I missing anything?

The listing is a few weeks old so no guarantee these are still available, but worth a try.

hope this isn't a stupid question