As a current student who has done 1/2 and doing 3/4 chem via VSV at the moment, I think I can give you a decent answer.
Doing a subject via distance needs alot of self motivation and dedication, so you need to be prepared for the workload you will get yourself into.
My personal experience with distance is okay for chem. Unit 1/2 were done a lot better than units 3/4, and the teachers are generally very helpful. However, doing unit 3/4 has been a bit of a different experience. The course has quite a few errors, and can get confusing at times, so I am currently learning better by following the textbook more than the course. So as I said before, you will need alot of self motivation. I think the course is okay, and it's pretty good for it being online, it's really up to you if you think you can mange it.
The workload is higher than an average chem student if you follow the course AND do extra as well as attend the online lessons.
If you have your heart set on chemistry and really want to do it, I do think distance is a great option. I would suggest looking at the courses website in the subjects page if you want to know more. Good luck, it is definitely doable!