to register for VAT or not

Just started business (ltd. Coompany), because of the prospective first year revenue no more € 70 K, is it good idea do not register for VAT, then if revenue is bigger next year, to be with VAT, and how it will reflect next tax year, please?
Thanks for any help

Who are your customers ? vat registered or not
Do you have supplies/raw materials to buy ?

That is the reason of putting the question here, because the main suppliers are from outside of EU zone and I can not claim VAT purchases back, then small number suppliers are from Ireland and selling is in Ireland and probably in EU contries

Its impossible to answer your question unless you give at least basic details of what sector you are in and what you are selling.