Modify (insert take them to a hose shop and have new ones made) and dont use the oil filter adapter thingy.

 

Think it's something I can pull off myself or should I take her to a shop?

 

You can do it, just figure out where you are going to place the oil cooler and the type of fittings you need and then take your oil cooler lines to a hydraulic hose shop and they will make them for you.
They can be rubber lines, no need to be steel and you can run them anyway you want.