If the 5 gallon extract kit is uses a partial boil process with both LME and DME, you may want to convert it to a 1 gallon, full boil, all DME recipe.
Maybe it's just me, but I was never good at finding a use for 60% of a 3.15 lb jar of LME
The math to do the conversion is not difficult. Recipe software can also do this. Personally, I find it easier to do the math than to do the data entry.