Do your proper research first before committing your money into investment.
Do take note that now you cannot invest everything from your CPF. You need to fulfil the CPF requirements of setting aside at least $20k in OA and $20k in SA. Whatever that is above required amount you can invest the balance.
If you have intend to use OA for purchase of HDB flat in the near future, then I suggest you look into using cash. Especially, if you only looking at 2 years of investing your CPF money. It is not worth for you to take this amount of risk. It's better to leave it with CPF to earn the extra guaranteed interest.
Look for an ethical IFA, he/she will look at your overall situation and advise you. If he/she felt that you are not suitable. He/She will advise you accordingly.