Do you know what is "thematic index of citing"? You should know what it is before you start killing your client's store.
Yandex will remove your store from index for mass blog commenting. All linkwheels, web2.0 properties, blog commenting don't work with Yandex.
Translated texts via GTranslate are crap. Yandex knows russian much better than Google.
I already suggested you the best solution: begun.ru, j2j.ru, gogetlinks.net - these are pay-per-post brokers.
Also you can buy links at sape.ru, but in this way you must know what "thematic index of citing" is.
THe best way for you is to outsource rhis job to native seo guy.
p.s. Yandex has own keyword suggestion tool which much better than semrush base.