I'm glad you described your market a bit. I have not seen a retainer model work in this space, but that's not saying you can't succeed with it. YOU are the expert, so I would not leave it to clients to choose what they want. If you do, you'll get clients who say, "Yeah, I hired them to make me ...
in my experience it is better not to create the wheel from allover again unless it is very big wheel. So if the business size is small or even medium then i would recommend to subscribe in any marketplace that is already there till the business's size justifies the expenses that will incur to hav...
I'll give you the answers that have worked for me, though I wouldn't say you "should" do this. This is where I found the best mix doing similar work. 1 - I would at the very least start with freelancers. There are a lot of great, talented people out there and this is the best way to meet people ...