That's pretty much what we did.
Went to Ikea to see what colors/drawer fronts we wanted and get ideas. Had the catalog to see what options there were.
Went home to decide what was a necessity and where we wanted stuff - this was fairly easy since we weren't changing the footprint of the cabinets. But we did debate about having banquette seating. Ultimately opted for more pantry space.
Had the guy in who took what we wanted and made it work with Ikea's stock.
He printed out a list of things we'd need to order.
Then we went to Ikea and ordered it.
The actual ordering was NOT a quick process and I'd recommend going at a slow time.
We also had a new guy who didn't know exactly what he was doing.
About a week later the delivery service dropped it all off.