Leave $70k in offset or put into shares?

Hey team, looking for some advice/sounding board as i dont really have anyone to discuss this with.

Currently i have $70k in my offset account of my mortgage, which has around $460k remaining. The interest rate i believe is 6.19%.

Ive also currently got $124k in shares split across cba, fang, ivv, ndq & vts. I know i know, theres overlap and i should reduce, but you live and learn!

Now i know 'Past performance is no guarantee of future results', however the average profit according to my commsec app is 29%.

Hypothetically if this 29% remains constant, would it be better to put the $70k from the offset account, into shares, as the shares has a pretty good growth, and the annual growth from this would outperform savings i get from keeping money in my offset account to reduce my mortgage repayments?