No, it's a commercial product, if you need to use it, you'll have to buy it.
Judging by the names, these are mostly (if not all) commercial fonts. Choose your favorite site to buy these fonts.
If you only need the number to print for one jersey, you can buy it on-line, it is really really cheap, like 5€ for one back number.And it's going to be easier for the shop too.
How early is too early, well it would be better to wait a little bit, especially if you're looking to make several changes. It's always better to update a font once with 10 changes, than 10 times with one modification.
Mon message était en fait destiné à Daaams. Le champ "Note of the author" n'est juste pas là pour passer un message au webmaster, d'où mon message
En ce qui concerne l'affichage d'une variante ou d'une autre, ça dépend de l'esthétique générale et du rendu.
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