But Considering the niche, you will not get that kind of quality premium blog at a low price. You should be ready spend a high amount to outrank your competitors.
Do you mean 3 Keywords for each and every URL?
OR
You are going to target only one URL with those 3 keywords.
If you are building porn sites you will have different kinds of category pages. So number URL will increase and your keywords will also increase. So plan according to it.
Mixing of all links for diversity and with few Nofollow is a great idea. You can stick with it.
Overall, The plan is doesn't seem to be good as well doesn't seem to be bad.
I think you need to work some more on this.
