I am in my late forties. I have make some investment thru platforms like Syfe and Ifast. Let say i still hv another 300k in the bank . What will u do if you were me?

In late 40s means you still have 10+ years to go till retirement, which to me, is still a long runway. More than 10 years is long term. I'd put most in Growth Stocks overseas until retirement.

After that, I will draw down on this sum, while ensuring the rest of the money continues to grow.

If it's US stocks, I will try to keep under USD 60,000 to avoid the 40% estate duty upom death, and probably shift the rest into bond funds.

If you are in your late forties, u probably left another 15 years to save enough for your retirement.
300k in the bank wont grow your money much. Its good u did some investment. However, u need to calculate how much u need when you retire. Its always good to have more than have less, as we do not know the future but 1 thing to know.. As a developed country our cost of living will rise. Medical inflation will rise.

You need proper planning to retire. U can diversified your portfolio. There are aggressive, balance and reserved portfolio.
Understand your risk appetite.
Annuity can be an option as part of your portfolio. Investment choose your stance passive investing or active investing.
Growth, dividend or both.

I hope i answer part of your question. I feel u need more planning.
I have presented alot of articles on seedly. You can find out via the hashtag below.
#planwithcolin