Chlorobutanol and PCC are expensive, and one would also have to make that acetal. Why start from scratch if you don't have to? Do a websearch for Lipha Chemie in France, and buy the chlorobutanal diethylacetal directly from them. As they are probably making at least hundreds of kilos of this reagent, it shouldn't be much more expensive than chlorobutanol itself, max $1/g.
Rhodium (Spoiled brat)