I'm about to start my third year off and am preparing to apply to experimental and clinical programs this fall, and I have no regrets. It sounds like I was in a similar situation to yours while in undergrad. I had a competitive GPA, strong research experience and was preparing to take the GRE, but I wasn't totally sure about the area of research that I wanted to pursue nor the types of programs that I wanted to apply to. I decided that some extra research experience in a field that I was considering pursuing as a graduate student was my best option, so I applied for relevant RA jobs and was lucky enough to land one. Over the past couple years I've been able to enhance my resume, learn how to cope with academic politics and difficult interpersonal situations with coworkers (this has been invaluable!), and make a comfortable living, not to mention pay off credit card debt and begin to chip away at my undergrad loans. I feel prepared and qualified to apply this fall, and because I've been in a research setting full-time, I have a pretty good idea of what I'm getting myself into.
If you are interested in taking this route, keep in mind that RA positions are very competitive. I applied to about 30 programs all over the US, had two interviews (and a third that I declined) and ultimately received two offers. I learned about most of the job openings that I applied for by simply checking university HR sites (check a lot of them and check them often, as many jobs are listed only for a short period of time), although I'm sure if wouldn't hurt to email lab coordinators or PIs to inquire about possible openings as well. If you aren't geographically restricted, cast a wide net to improve your chances.