It's never a good thing to consider becoming a o/o without driving a truck for awhile. You simply don't have the experience at this time. Over the years, many have gotten into truck driving, but never became truck drivers. And yes, there is a hugh difference between the two. Everyone starts at the beginning, whether they like it or not. Those who try from the middle, and buy from the start, will lose more than if they started their o/o carreer with being an experience truck driver.
Learn to crawl, then walk, then drive a rig. After you have been in it long to commit yourself, (and most of you already know), then buy that rig. At that time, you will know the in's and out's, what to do, and not to do. And to top it off, it's better to learn all of this while getting paid by someone else rather than to learn out of your own pocket.
Of course, you know, I could be wrong.