[88911coupe]

Apologies if this has been addressed but I did a search and cant' find an answer. I have an '88 Carrera with an additional condensor/fan in the wheelwell (no name brand) and a Procooler so my hoses aren't "factory", to say the least. I'm also using envirosafe rather than R12 or R134 but not sure sur that matters to my question.
I have considered replacing the hoses but now I'm wondering what would the benefit actually be? I've never had any sort of compressor blow up and the system has only been opened when I added the procooler and condensor, afterwards vacuumed down and could not find any leaks (lucky I guess). I also ran some denatured alcohol through a couple of the longer hoses and got some oil out but it did not seem terribly dirty...also used new oil.
Is there anything wrong with keeping the old hoses, which obviously had R12 for many years? Yes, I know they are not "barrier" hoses but other than a potential for very slow leakage are there any other downsides?
The problem is I can't buy a hose set from the many good vendors who sell them since I'd have to hack them up to fit my current configuration.
Thanks,