Love it too much

[Fluffmarten]

had my polo cl coupe just under a year now, its the best first car ever, my intention is to buy a new car september. i would prefer to keep the polo a while longer but its hit the dreaded 78k mile mark and i hear the head gaskets gonna go soon. its also started leaking coolant, dont know where from but i have to top up every week or so. if you could give me an idea of what to expect when it comes to fixing potential problems would be greatly appreciated.

P.S someone dented the side panel, is there any way to replace this? dont see any way of removing it