Besides the "chain take-up" capacity you will also need to consider the "largest rear cog" capacity of the derailleur you have. Some road type derailleurs will only accomodate a 28- or 30-tooth large cog; the jockey wheel may not have enough clearance from the 32-tooth cassette if this is the case. This capacity will specified be in the manufacturer's tech documents. Depending on the bike this capacity may be exceeded by a few teeth but you will need to try it and see.