PoE Occultist Hexblast ignite league starter builds

Hi all! So I've decided to try to theorycraft something simple for my first leaguestart without using a guide made by ziz, jungroan, pathofmath, and the like. I'm interested in an ignite build and eventually settled on hexblast ignite because playing with curses also seemed fun. I made a POB and it's hitting 8mill ignite dps on guardians on gear that shouldn't cost more than 7 or 8 ex I think by the second or third week of league. Is this too good to be true? Maybe I invested too little in defenses or something. &x200B; Any input would be appreciated ! :) &x200B; POB:[