Convert Model

[Tio Akima]

hello guys
 
this is my model. I made the kame house.
 
look, she has 1,481 polygons.
 
I'm trying to export to FBX and then convert in RSM
 
And so, to use the map with the browedit.
 
But I have a problem.
 
I can export only one object, for example a wall.
 
I can not export all together.
Conisgo not export the entire model.
 
How do I export the 3dmax the entire model?
 
OBJECTIVE: Exporting this model in FBX, convert to RSM and use the map.
 
 I was told that the limit is 1,700 polygons, correct?
 
can anyone guide me?
 
thanks