What your doing sounds fine. A cheese cake and a bowl of fruit completes it. For that kind of spread I might go to a Deli for thin sliced meats.

I'd use a sirloin pot roast. Boneless Beef roast will cook up nice

I like London broil as well, although just being me, I seldom cook one myself but rely on the deli counter for their fresh roasted LB slices.

Be sure you have a full range of condiments for the sandwiches - cheese, mustard, mayo, horseradish, maybe sliced tomato and avocado. I'd also include chutney or onion jam. And I'd also be inclined to go light with any dessert, which really isn't a lunch thing - fresh fruit and maybe just some cookies for the grands.

Two recipes come to mind (posted by Ginger St Thomas on the Recipe Exhange years ago) and both are delicious -

ITALIAN BEEF
One 3-4 lb roast beef (rump roast or sirloin tip)
1 jar pepperochini peppers, juice & all
1 can beer
1 can beef bouillon
Combine all ingredients in a large crockpot. Cook on high 30 minutes; reduce heat to low. Cook until beef is tender. For supper, start cooking before work. If you want it for lunch cook at bedtime.)
Remove meat from juices, slice thinly & return to pot. Serve on hoagie buns & dip sandwiches in juice.

CROCKPOT FRENCH DIP SANDWICHES
2 cups water
1/2 cup soy sauce
4 whole peppercorns
1 tsp dried rosemary
1 tsp dried thyme
1 bay leaf
1 tsp garlic powder (had none so used 1 minced garlic clove)
3 lb boneless beef chuck roast, trimmed
8 French or sourdough rolls, split
Combine water, soy sauce, peppercorns, rosemary, thyme & garlic in a slow cooker, stirring until well blended. Place roast in cooker & cover.
Cook on high for 5-6 hours or until beef is tender. Remove meat from broth & shred with a fork. Serve beef on rolls. Pour broth in small bowls for dipping.~~ Good topped with Swiss cheese or sauteed onions, peppers or both. I like mustard on the rolls, too.

Another option would be a meat and cheese tray from a deli. It would give you a variety of meat and cheese. Those who want to make a sandwich could and the low carbers could skip the rolls. Sides like cut up veggies and dip or hummus, potato salad, green salad, broccoli slaw, deviled eggs, fresh fruit and a dessert would round it out to make a nice meal. The low carb people cant have dessert, but strawberries and whipped cream is something they could enjoy. Sprinkle with toasted almonds to add a touch of elegance if there are no nut allergies. If you were to serve strawberry shortcake you'd have both groups covered.

For those avoiding carbs, you can use collard greens in place of sandwich wraps and they're very tasty.

I agree to just go to really good deli. Get roast beef and turkey. Can you make a home made cole slaw?

If you expect a cool day, how about adding soup to the menu? I would do a vegetable soup.

Cheesecake is a good option for the low carb and others as well. I have a really good cheesecake recipe, but it has to be made the night before and you need a food processor.

I, too, would get the meat from a deli, good bread for those who will eat it, a big salad and some veggies and dip. Soup would be a good addition and something homemade.

If people are eating healthier, I would skip the cheesecake and serve something lighter and healthier. Maybe some fruit and low carb cookies.

I, too, would get from your deli. ours gives you the au jus if u ask for it. i am low carb and put mine over spaghetti squash, delicious!! i add extra sharp provolone. you can also do broccoli rabe, roasted long hot peppers along with fixings stated above.

baby kaiser rolls for those who eat that. low-carbers are usually satisfied with a big salad and their protein.

vegetable tray, condiment tray (olives, pickles etc.), marinated mushrooms -hot or cold, marinated mozzarella balls, roasted red peppers.

other ideas to round it out: .potato salad, macaroni salad, coleslaw, chicken salad, egg salad, a soup if the weather calls for it

dessert: coffee cake, cheesecake, cookies, fruit tray (low carbers usually just eat berries).

I guess Im the odd man out but deli meat all tastes the same to me. It is over seasoned (roast beef) or just plain tastless. I have tried Wegmans, Safeway and Giant foods but can't find any that I like. Sam's has a sliced brisket which I have had but it is pricey for this many people. Also I have limited table seating(6) so soup might be difficult. I may go in a whole new direction and do tacos with taco salad as an option for those on low carb. My daughter has a huge home and usually hosts family events but I(stupidly) said I wanted to host this time. Oh well it will be fun. Thanks for all the suggestions. I'll try one more store this week as I have not tried their deli meats.

We always do a rump roast,in the crock pot, shredded. Make gravy from the juice and put the meat in it and serve with rolls.

For slicing,I would only do a tenderloin, since I'm a snowflake and don't like chewy meat.

Oh Janie, I remember Ginger! Her recipes were great too. Wonder what shes up too. She and RuthieG were besties, now Ruthie has passed tho. Miss some of the old gang.