Is there a maximum amount in your special account that you are allowed to top up?

Hi there, I am planning to buy my own house. I need to transfer out $120k out of my cpf ordinary account. Basically to return back to ordinary occount after buying my house. I do want the entire monies in ordinary account to be wiped out on buying the house. What are my options to park the money safely say for a period of a year or so??

The maximum amount is the current year’s Full Retirement Sum.