97 2.7 head gasket leaking...

So at 229,000 ive got coolant leaking into one or more cylinders. It idles rough at start up (for a short time) and if it sits for days white smoke billows for a short bit....

My oil looks fine so im assumming just head gasket? Its looking sweet golden clean as usual

I heard maybe as timing chain stretches it may cause damage somewhere creating coolant leak?...

Will i cause any damage to other parts if i dont fix it soon? I did put some head gasket sealant in the coolant.

Im thinking ill do the work myself at some point... heaf gasket, water pump, and timing chain...

 

Engine bearings are not fond of coolant.