Some people build and vape as low as 0.09 ohms, others don't sub ohm and vape at 1.0-2.0 ohms. None of them has blown up just yet. Watch some videos or read some guides about coil building etc.
I really don't understand why vape stores sell rebuildables to new vapers, with the tendency of them returning to have the coils built, or not giving at least some guidance. Anyways as others mentioned, you'll be fine at 0.45 ohms as long as you don't try running that at 350 watts with a shitty battery
I use kendo cotton gold edition, switched from cotton bacon since I had to rewick more often, and in my personal opinion it just didn't give me the same amazing flavor kendo does. But just like juices its different for everybody, just because we like something, doesn't mean you would feel the same or get the same experience.