A: Hello Flow, there should be no problem.

If you are concerned about kws databases for functionalities such as keyword research, our provider for this function is really solvent: it has more than 5.5 billion KW in total 3.6 of them updated in the last 30 days and more than 2.4 billion KW in English only.
And its numbers just keep growing and growing.
To be super transparent, the 2 biggest players in the market talk about their databases having 17 billion KW (Ahrefs) and 22 billion KW (Semrush). The rest of the players I know, either do not publish this information or at least, I have never been able to find it.
That said and to be totally honest, whenever I work with the tool on normal niches, the quality of the KWs that the tool suggests to me is good, but on some niches that are a bit weird (especially those related to gambling, sex, fast money...) the results have left something to be desired.
If you are concerned about features like position tracking, we create that info on the fly for the country you tell us about, so language and region shouldn't be a problem either.