I recently purchased the Pricerr theme (a clone

Hi, I recently purchased the Pricerr theme (a clone of Fiverr.com). On Black Friday, iThemes had a massive discount, so I purchased their security. When I asked the Pricerr designer (afterwards) what security he would recommend, he suggested Wordfence. Ok, so my question is, can I install both of these on my site? If not, which do YOU think would be better?
thank you.
Sim