get the furniture, the decorative pieces that you like & prob the BBQ and all the BIG BULKY items on the shipment, the rest, you can get them cheaper in spore.. esp on LCD, electrical and toddler stuff... oh but kids clothes are not that cheap here...
and yes, consider changing to a smaller capacity with moving allowance for you to settle in, that is a better way to maximise it.

or see if you can split the shipment twice or to other forms that allow more flexibility...
i've lived in HK almost 4yrs myself and is back to spore so i know...
welcome to singers! cheers