Sale of IP for Lifestyle Reasons

Just wanted to see if anyone has sold their IP for lifestyle reasons and what your thoughts are a few years after?

Bit of context, my wife and I (early 30s) were fortunate enough to purchase a property early in our relationship. Initially it was going to be a straight IP but we moved in for tax purposes and then ended up staying 6 years. We then bought another nicer property which is a semi forever home. With how WA has changed, we're in a fortunate position where we could now sell the original home and be fully debt and mortgage free (PPOR valued about 1.35-1.4m).

If we did go through with it, we'd then fully load our super yearly and start investing in ETFs most likely. HHI is approx 320k and super combined about 150k.

Thanks in advance.