What did you use for lines? Standard hydraulic hose? I kinda like that idea, as they will never see anywhere near burst pressure. The problem with most remote filter kits is, they use the bullshittery steel braided lines that always leak sooner or later and I think you have that problem licked. Just get the pipe threads sealed and I think you're golden.
I got nylon braided hose because I just don't like how bad normal an lines look after a while. they're super soft and still have a couple strands of aluminum to hold shape but you won't get stabbed cutting them