Hardware & Networking

Both are important, go for CEH first.
Starting from the point of view, Hacking doesn't require eligibility of academics. Hacking is just a skill which requires, coding knowledge, network knowledge, server-side scripting knowledge, computer hardware knowledge and testing knowledge. Coming to the part, if you saw the articles, the children are around 5 - 11 years of age are hacking networks, finding zero-day flaws in software, etc. So this shows hacking doesn't require any academic courses. Learning hacking through any certification such as EC - Council CEH, (ISC)2s CISSP, CISA and CISM from ISACA and OSCP from Offensive Security will improve the professional skills of hacking.