I have not done the conversion on a CL but if I were you, I'd go the full monty and convert it to a nice set of modern forks.
I would not worry about length and plug-and-playability too much. Most USD forks can easily be shortened. At least if they are not of the closed cartridge type.
A couple of years ago I did a conversion on my XT500 and fitted 2003 KTM 250SX forks. By the way... In that conversion I did not shorten the forks. With hindsight, the only thing I would have done differently is to use adjustable triple clamps so the geometry would have been adjustable.
Making a front fork fit in a bike is pretty easy if you have access to a lathe and maybe some basic tools to press the stem out of the lower trees. It's just a matter of careful measuring and checking your measurements two or three times.