XML feed to Magento 2

I need to import cca. 70000 products from xml feed - almost all of the products are configurables. I have 3 xmls - one for products, one for stock and one for prices. This is the product one: <products> <product> <Kod_IT>B110307</Kod_IT> <Znacka> <![CDATA[ No name ]]> </Znacka> <Kategoria1> <![CDATA[ Textil ]]> </Kategoria1> <Kategoria2> <![CDATA[ Nohavice ]]> </Kategoria2> <Kategoria3> <![CDATA[ Pánske ]]> </Kategoria3> <SkupinovyTovar> <![CDATA[ B&C•SHORTS MOVE , Black, M ]]> </SkupinovyTovar> <Farba> <![CDATA[ Black ]]> </Farba> <Textil>Y</Textil> <Skupina>PB110307</Skupina> <Velkost>M</Velkost> <Rozmer/> <Obrazky> <obrazok>[login to view URL]</obrazok> <obrazok>[login to view URL]</obrazok> <obrazok>[login to view URL]</obrazok> </Obrazky> <Priznaky/> <PriznakZmazania/> <DatumAktualizacie>1461762626</DatumAktualizacie> </product> I also need to have cron that will check product stock every day, or twice a day.