I've been thinking about this, but just cant find the answer: How many polygons is too much for Blockland?
Look at the player m.dts and other .dts files that are supplied with blockland.
try to keep yours as close to that as possible.
Then take and figure how many of your models are going to be in game at the same time (then multiply x5). Setup a test map of your own and see if you lag. if you lag, its too many polygons.
if you dont lag, have a friend with a lousy pc join your game and test. if he lags, it might be too many. if he doesnt lag, then your good.