^that. You have some decent technical skill, but the style seems a bit dated, so many models probably wouldn't be interested except for pay. I mean sure, most people would "rather not pay" but you have to start somewhere, right?
Hiring a pro really is a good investment if you're serious about improving your portfolio and doing more model work (hopefully as unpaid tests down the road). They look better in front of the camera because they know how to move their bodies and faces for good angles, which in turn teaches you a lot about direction with posing; when money is involved, people are most of the time FAR more motivated to actually show up; they can almost always do their own hair and makeup so you don't have to hire extra people for that; they often have a decent selection of wardrobe; and ultimately they just make you look like a better photographer.
That said, please note that there is a huge difference between hiring a professional model with a good portfolio, and paying some random hot girl with barely any experience.... a HUGE difference.
Ultimately in order to work with models without having to pay them you need to get your portfolio to a place where a model (or agency) believes you have something of value to offer their book. Take a look at the boards of model agencies and try to do some work like what you see there. A lot (but not all) is natural light, boosted or lowered contrast, good connection with the camera, and neutral but not bitchy facial expressions highlighting a model's natural beauty.
Also, keep going with the friends & family angle. Hope this helps.