Because you're providing carbs, veg and meat in your main course you have free range on what you can serve up for a starter.
Go for something light that refreshes the palate, and concentrate on the presentation of it. How about one of the following?:-
Couscous salad (
http://www.womansday.com/recipes/10535/golden- couscous-salad.html)
Make just enough for all your guests to fit into a nice shaped small bowl, then turn out the couscous moulds onto the plates. Serve with a handful of wild rocket on the side drizzled with olive oil and lemon, and place two strands of chives over the mould. It will look very impressive!
or;
Tricolore Salad
- tomatoes
- avocado
- mozzarella
- fresh basil
Slice the tomatoes, avocado and mozzarella (try to slice everything in similar circles!). Then simply place in a circle on a plate, alternating the 3 colours. Finally, roughly chop/rip the basil and scatter over. Drizzle with olive oil and black pepper and then serve.