If the somewhat patronizing responses here like the one above me are not serviceable to you, Misty, consider looking for and trying some older versions of FL Studio and see if they are easier for you to use. I've been using FL Studio exclusively since 2003 and have some accomplished some fairly incredible things on it while having some not-insignificant learning and mental difficulties (to be generous) and I've still probably not used 40% of what the program has to offer. It IS deep and complicated, but with time and patience, you will figure it out just like I did.
I use FL Studio 11, myself. The limitations are the same as the ones you mention above but it has remained a reliable mixture of simplicity and powerful function to the point that I have never needed to upgrade from it. Some months ago I even found and re-installed FL Studio 11 on my laptop here, so finding an older version and trying it out should be a worthwhile venture for you. Don't go too old though, certain functions indelible to FL Studio now are not in the oldest of versions and lifetime license to use FL Studio only goes back to a point.
Also, you do NOT need to spend $900 to get FL Studio and Poizone at the same time. Poizone can be bought and downloaded separately as opposed to a bundle. If money is an issue, go with a vst called Synth1, that thing is free, super easy to set up, and thousands of fan-made presets exist for it to give you all the synth stuff you could ever need.