I would move the utility stuff into the back portion of the garage, allowing me to knock through and have a bigger kitchen. Front of the garage can remain for storage etc. Partition it off if you like, I highly recommend a long run of tall cupboards in the utility and a run of counter tops for folding washing and having a laundry sink.
Would be tempted to do a partial knock-through into the "study" to make a dinning room, but having double pocket doors so that room could be opened or closed off to the rest of the kitchen.
I'd probably leave the rest downstairs, depending on how big the porch is perhaps creating a built in cupboard/wardrobe for coats, shoes etc right before the front door.