Looking for input - Tracking available lengths of hose in a part number (Lot Tracking?)

Just looking for some ideas on where to start looking.

We sell hose and fittings.  For the most part, we don't separate each hose into different part numbers based on their lengths.  Example - we could have a 1.5" red hose (NL1322-150).  We could order that hose in 100' lengths or 200' or maybe 50' depending on what the vendor has available as we sell in different lengths.  

I'm trying to avoid creating more part numbers based on standard lengths.  I don't really want to have NL1322-150x50, NL1322-150x100, NL1322-150x200 if I can avoid it.  

Would "Lot Tracking" be the way to go with this if we wanted to explore?  I was looking up documentation on lot tracking but it doesn't explain very well.  I'd like some feedback from anyone who might have a similar situation or have setup a customer in a similar fashion.