1st of all, don't endanger your safety couse of the budget. I know u NEED to kite but actually, u don't :)
Pretty soon, smaller kites will get even more cheaper, save some money for a smaller kite and it will probably save your life (or avoid looong swimm) if u are mad.
As an unixeprienced fellow, i can tell u how i look at the windranges since we don't have stable wind.
I look at average conditions and farely nice weather (no rain or megaclouds involved, most of the time long wind holes, that just makes wind more unpredictable) and no more than 7-8+ knot gusts. So if a gust hits a bit longer, could hold it few knots overpowered at 12 oclock in the water or a bit to the side if i see it will overfly me, but if it is 2 big difference like 10+, i don't even plan to go.
Here is an example
I could go on Sunday with my 12m and i wouldn't go on Tuesday with it. Ignore the hours and conditions, it's just average/gust example.
Also, was wondering, how would LW kites like zehpyrs, flysurfers etc handle Wednesday conditions? Teabagging?