@Sarah McCluskey - I just don't accept 8% proforma returns on active investments. Now you mention that you are going to use a property management company and that's great, but this still will not be a passive investment no matter what you think.
Some things to consider:
1. If you really want to get into rentals I would highly suggest managing your own property. At some point you may be able to scale up and hire this out, but I think it is absolutely imperative that you gain experience as it is worth its weight in gold. Also, property management firms on these types of properties can be a major cash drain. They take a percentage of gross and lease up fees but the biggest issue is that they don't have a vested long term interest in the property. You will get much better tenants if you learn to vet them personally and much more economical/quality repairs if you build your own contractor network.
2. If you are happy with 8% returns than that is fine (everyone has their own underwriting guidelines), but keep in mind that there is also an opportunity cost to every deal you do. Maybe you could go out and buy 3, 5, 10, etc. of these deals immediately, but at some point you are going to be tapped out and won't have the capacity to do another one. What are you going to do when that "home run" or "grand slam" deal comes across your plate?
3. Make sure you double check and triple check your numbers. I would also add a contingency too.... Maybe its just me, but 9-10 deals I do end up having something pop up that I wasn't expecting. Not really a problem if you account for it.