Need advice on my LL
 

I'm starting my link list shortly and was wondering if I should keep it "general" for now then add categories later or whether I should wait until I have enough sites to list in each category.

The thing is that the LL is all ready broken down to one niche.

It's a fetish niche (no other niches involved)

Should I start it with all fetishes listed together or separate it into categories; feet, smoking, goth, vinyl, bondage, punk, lingerie, etc.

You would really have a fetish LL broken down by niche thats what I think your saying? If so you would break it down when you open it for the best results on targeting your traffic :)

The term "fetish" covers a lot of different areas - I'd break it down into categories.

I'm just wondering if it would be a bad idea opening it up as a general fetish LL in the beginning until I got alot of sites listed (seeing how I will have around 10-12 categories)

I would open it as a categorized fetish LL, start with 6 categories or so. Be sure to cover "pantyhose", I'm getting loads of these sites myself, gonna be the next category I'll add :)