Usually it's tightish at the beginning and loose at the mid-late stage. For example in late stage:all suited Aces, ATo+,34s+,J9o+, all broadways, all pocket pairs, suited connectors like 76s,89s, gaps 96s,75s etc. Around 30-35% in late stages. In late stage you can wider your range by adding all Ax hands,suited hands with 1 high card like Q2s,J2s etc, all playable hands like T8o,J8o etc. Also, take a look to the blinds. If they likes to see a flop and call your Cbet a lot then maybe it's better to not open junk hands and tighten up against them if you not feeling good at postflop