You could do a couple things:
Easy - get a bigger drive.  My last move, I tossed everything less
than 500MB, including several 424MBs.  Ask around, it may be free.

OR:
Install in one large partition and take a look.  X won't likely
fit on a 170MB partition (30MB swap).

Then du /var /usr  and see what you get and you COULD reinstall.
I use > 200MB for var, and have enjoyed not dealing with 200MB
drives for a long long time.

Quoting Jianyi Dai (jianyi_d@yahoo.com):
> Hi,
> 
> I just started to load NetBSD on my SparcClassic,
> which has only 200MB disk space and 24MB memory.
>  
> Now, at the beginning, I need only basic tools for
> coding and compiling programs( for example, gcc ). If
> possible, install X, --I doubt it though.  
> 
> So, how to create the BSD partitions ( sizes of /root,
> /etc, ...) to make it a usable system? Or how to
> partition is a reasonable way? 
> 
> Thanks!
> 
> 
> 
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