Dilemma Gasket Swap Or Not?

Ive been losing coolant slowly over time, It kind of drops a cm from above the max mark every 4-8 weeks. Ive looked everywhere for leaks such as hoses, etc., cant seem to see anything. The coolant tank has pink/orange fluid in it, but does have oil stain marks on the plastic, dipstick is just oil no mayo, oil cap also has nothing, the exhaust seems to be steamy lately, not sure if its weather or not. It doesnt overheat, needle stays below half way line, and takes usual time to warm up from cold. I do have the remote PRT thermostat on it, I also have the VVC style inlet on it, so It doesnt have a green IMG, just a paper/cardboard type one, but Ive looked below and cant see anything leaking down from it. The system pressurizes ok, and pipes go hard, etc., Ive spotted a drop of oil weep where the head meets block at the front left hand corner behind the cam cover. So was wondering if its worth just getting the head gasket done, or if I should just keep looking for the leak or hope that its leaking internally/boiling off somewhere/how.

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