Diy is a great choice! I bought my juice from a local for over a year and in that year the quality only went down, so I decided I would do it myself. I couldn't be happier with my decision. Before diy, I was into the more fruit based flavors and menthols, but since diy, I really do enjoy the more richer flavors and tobacco based flavors. There is a serious learning curve involved with diy and research is a great start, but that is only going to get you so far. Your personal preference can only be decided by you, the vg, pg, nic, and flavor supplier will have a lot to do with the mixing percentage. Normally 12-20% is a good base, but where you will end might be completely different. I hope you the best and if there is anything I can help with, just say the words.