Honestly, I feel that you're looking at this all wrong. Pick a theme, and play it. You need troops to score and other stuff to scare the bejesus out of your opponent. But if you don't have a style or theme tying it all together where's the fun.
If you like to build tanks, have at it, if you like more guys, then that too is an option. But whichever way you jump you'll end up with at least 50 models on the table.
And don't worry about high fives, someone will want to slap you regardless of what you bring
Cheers,
A