i am wearing light armor at lvl 34 now. When i first read about scaling armor i decided to wait for starting the thieves guild questline because it′s the most adorable armor for me.
Now i read the max armor lvl you can receive is at your′s lvl 34 http://elderscrolls.wikia.com/wiki/Nightingale_Armor_(Skyrim). But then i read something about Lvl 46 (uespwiki).
So what is right now? Can i begin the questline or should i wait until i reach lvl 46?
My second question to that is the relation between skill level and item level. E.g. leather armor has a basic armor of 20 when i found it at lvl 1. At lvl 10 i got that kind of leather armor again but the armor rating is 50 now. So is there only a relation between my light armor skill and therefore the "mulitplier" and the basic 20 armor or did the armor level up to 10 like me?
Thanks for replies

just look on your armor rating after 2-3 skillincrases in light armor and you will see a small increase