Are there any good sites that offer custom orders? By good I mean with decent payout, and don't require two offers to complete?
In my experience, most sites will do a custom offer (if they don't show the option, you can often request through support).
As far as offers, the toss-up is that sites that require less in the way of offers require more in the way of referrals (after all, they're in business too). It's finding the balance with a site that is not too difficult to complete, but still can offer a good payout.
At the beginning, I would stick with the well-known sites.
I understand that the more offers one person does the less people you will need, but I'd just rather have simple 1 offer sites and have to worry about getting a couple more people.