For someone in school, working on a masters, with all the related tuition expenses, this is probably not the time for LASS, VSL, etc.
Even if the OP has the extra funds, the high-end libraries are not really the best place to start unless the person knows he/she wants to do extensive orchestral writing.
+1 for the comments about GPO. For a single line for a homework assignment GPO would be perfect.
The cost is quite small, and GPO is a great starting point for orchestral composition (and with extensive editing can also be used to create very good orchestral mock-ups, though admittedly not on a VSL level).