The non concessional contribution cap rises to $330000 after July 1st meaning you could contribute $390000 using the 3 yr bring forward rule ( if eligible)
The concessional contribution cap is $30000 (tax deductible), rising to $32500 on 1st July.
The other consideration to delaying starting a pension till after 1st July is the Transfer Balance cap will rise to $2,1 million , not a concern now to the case being discussed above , but maybe of concern in the future if their spouse dies or they sell their house , opening up further options to top up super.