HSBC is a laggard, i.e. it hasn't fallen much in this bear market. I think HKD115 is a better entry level (current price is HKD124). But since you have a large amount, you might like to buy 1st batch (maybe ~10-20%) for long term investment, and buy the remaining when the price falls further.
2-month deposit gives interest of less than 1% p.a.? If so, I'd rather hold some in cash and wait for better opportunity to enter the stock / commodity market.