Take nivonuke's advice - you've just joined BHW (you don't mention how much SEO experience you have). If it's limited, it's tough to outsource work for a number of reasons - you may not know what will work best for your client's sites and it's easy to get overwhelmed.
My suggestion would be to spend a little while get a site or two ranked. It'll show you want works and what doesn't these days. As you do this, you'll develop an idea of which services to use and which outsourcers to trust. These sites you rank can also be shown to clients demonstrating that you can "walk the walk".
I would also check out Takticals thread in this section, well worth reading!