I don't know about the coil, but as far as the ignition wire goes, aside from a heat shield sleeve from DEI, moroso, etc. you can also do what I did and switch to a taller plug cap to bring the plug wire up and away from the engine and exhaust.
This covers the basics of what I did.
http://chinariders.net/showpost.php?...3&postcount=51
And how it actually looks installed.
http://chinariders.net/showpost.php?...4&postcount=52
This actually allowed me to take off a good 6 inches of plug wire.
As far as the coil side, there are a lot of options. I do know that most of the "performance cdi" coils sold for these bikes tend to actually be weaker than the coils these bikes come with, at least from testing I have seen.
If I were going to upgrade coils (I plan to soon), I would likely do an IGN-1CD coil. They are usually around 40-50 bucks, and include a secondary ground wire that you connect to the cylinder head to help isolatethe primary side of the circuit. DIYAutotune actually carries these.
https://www.diyautotune.com/product/...ischarge-coil/
As far as plug wire goes, take your pick of any 7 or 8mm plug wire should work fine. You can buy it in bulk and add whatever boots/ends needed.