1.
I am going to buy phplinkdirectory script. No idea if voting system is included in it. Lets see after its ready to go.
So, you're not really sure what you're about to buy..are you?
They are providing a working demo...just saying.
2.
Despite what everyone is saying...there are tons of Bitcoin directory listings already. Also a lot of niches, like Bitcoin Gambling listing directories.
Do you really think yet another one is needed?
3.
If you do think another one is needed:
You really should do more/better research and decide how you want to stand out of the crowd...and on the long term, how you want to make some Bitcoins, just to cover your hosting plan.
4.
Although phplinkdirectory looks solid...it also looks very dull and very 'so web 1.0'/'13 in a dozen', so you need to customize it also, too make it more appealing.
Especially starting with 0 traffic and no/little coding skills (assuming this, cause your buying a script instead of building it yourself).