What kind of performance will I really get?

[LKSd83l2]

I'm thinking about buying the composer's collection.

I already have Ministry of Rock, Orchestra Gold Plus, and a few other VST libraries in use, but that's on my PC at home. At college, which is where I'll be using this program, I will only have my laptop. The basic specs on it:

Mac OS X
2.66 GHz Intel Core 2 Duo
4 GB 1067 MHz DDR3
3 MB L2 Cache
300 GB HD space

My desktop passed the requirements for MoR and the Orchestral libraries, but my arrangements are sometimes large ( 10 instruments simultaneously or so ), and so I would often get instruments dropping out and what not.

So, what I'm asking is: with a laptop of those specs, could I expect to freely use the programs in the composer's collection with performance good enough to actually get stuff done well, or am I going to have to wait until I have access to a better system?

Thanks guys,

-Cole