All on Yahoo?
If after all the research you're not confident, I'd throw it at Looksmart, and with the money left I'd spend on link-building (that is, unless, you're in a position to do it yourself)
However, don't waste your pounds here
[asia.yahoo.com...] is open for free submission and when indexed will propagate through the other Yahoo directories.
Looksmart probably best to spend your doe!