Thomas,? the extra 0.03 won't make any difference.?
Regarding the enamel, there are several kinds. Some are designed to burn off with a very hot iron.? Some are designed for high temperature,? and must be scraped off. So you need to be aware of that and test the wrie you get, and/or read in its specs to know.? I? personally scrape all enamel wire types, because relying on the enamel burning off results in most of the kit assembly issues.
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Also be aware of the type of wire.? For this application copper is better than copper-clad steel, etc?