@Halcyon32
Speaking as someone who is interested in research but considered different options with being out of school (gap year), here are some of my thoughts. Take or leave what you will:
-Without a lab it's difficult to understand what actually goes on within the research. You can read about it, which is great, but without having data or working with it directly, it's a very different experience. I emphasize on the word "different": if you want to write that's fine, but immersing yourself in how data is gathered gives you more perspective on what the data actually means.
-From people I've spoken to in research, publishing a review is difficult if you're not an expert in your field. I wouldn't say it's impossible but mentorship will be exceedingly valuable if this is what you're interested in. You'll need input within the field you want to work in to make sure what you're writing is good for where you want to publish.
...Maybe contact different publishing places for how undergrad research would be viewed? (someone check me on this?)
-As many people have said, if you're doing research just for the application or getting noticed by schools, it won't come off as well. I do think from what you said that you like the field you want to study, so just make sure you're doing things to keep that interest alive. Again, I'd emphasize getting good mentors in whatever field you want to do.
To sum: Research can be amazing if you're in it, but make sure you get good mentorship and that you're doing it for the right reasons.
What kind of research are you interested in, if I may ask (clinical, bench, etc)? Also are you interested in research or just starting or in a lab now?