Full-Text Indexing

I have a table of product inventory I want to be able to search using the CONTAINS and/or FREETEXT functions. There are actually 4 columns I want to be searchable: brand, product name, etc. Since the table can have only one full-text index, should I just define an index on all 4 columns? It would be large in relation to the table, but the table itself is small (~600 rows). The index would not exceed the 900 byte limit.

Will this give me problems in terms of workability or performance? Is there a better approach? I could also just use LIKE searching, but it's significantly less sophisticated.

Thanks in advance.

That depends.
I would suggest using full-text searches on columns that are text or ntext only. Using full text search for a brand name seems like a waste when you could easly use LIKE instead for those columns.