Go on your way, no worries.
So reduce all your trees on your table, all your sceneries... To fitt the fact that your bases represents 500 soldiers and not 40.
For my part, i like beautifull tables of our scale too much.
Clearly, wargames have always represented small fights. Never big battles. This is only a little bit less visible with WM than Battle.
I don't mind, for my part. If 200 orcs comme to loot my kislevite village, or if they are 20 000, what is the difference ? my own army is proportionnaly the equivalent.
I just enjoy the game.