On private you can suicide, but i think its better to just automate breaks and play like 4 hours a day. I think you will easily be able to last weeks on a good priv.
OFC yeah you can suicide, it's possible on privs, but i think playing nonstop will still get you banned very quickly.
IMO it comes down to question whether you can afford the breaks (cuz you still have to pay the server/have computer running). If not then suicide, if yes just play 4h break 15-17h.