I may have missed it but where are you located? If this is just for a project and you mainly shoot DSLR then you might consider borrowing equipment. For example, if you lived near me I could lend you any number of Minolta bodies with a 28mm, a Nikon F with a 24 or an Olympus OM-1 with a 24mm. Unless you are going to continue on with film, which is a big possibility, after the project ends then either renting or borrowing makes more sense. It would give you the ability to try different makes and models without making a financial commitment until you figured out what you like.