Wait, you're thinking of starting with ENT?
No, no, no, no, no. TOS, TNG, and DS9 are the only choices to start with. ENT is something you watch only after you love the franchise.
Yeah, ENT happens chronologically first but a huge deal of it is references to things established in other series. Do NOT start with ENT.
Although I would encourage watching the individual series chronologically rather than just cherry picking, except maybe skipping some of TNG S1.
If I were to advise someone totally new to Trek who wanted to get into it I'd say, start with Q Who then just watch TNG from the start of season 3. Then when they get to the end of TNG, go to TOS and DS9.