Yes, that would be the way I would go, use their expertise..
But I know locally here in South Australia a "modeller" who got another modeller to build his layout, gave him the size & very basic info & when it was finished, he couldn't run it easily as he didn't understand the control panel & when I asked him, "didn't you say to the builder what you wanted ? " . his answer " well he is modeller too so should know what I needed as aren't all layout controls the same? "