So, 3-4 months of hodling and not listening to the trolls 'paid out'. Bought at 680, then the dump to 300s but hodled through and now almost back to zero
but also bought some coins at 780 too but not as much as at 680.

you gotta go with your weighted averages, which would be somewhere between $680 and $780 (and closer to $680 from what you are saying... so maybe around $710).
I started at $1200, and my costs are about $600 per BTC, including fees. I have had some bad timing as well, in part based on logistics of fiat.... my average price per BTC is likely to go up considerably, since the price is going up and I have a fairly good size chunk of fiat on its way.. not sure when or the exact amount, but likely around 50% of my current total BTC dollars investment.