SEO Backlink Questions

So about 3 months ago when i was even more noob i started a porn tube site for organic search. I always about taking action so i followed adrians porn tube method but for search engines. I figured it would fail but figured it would help me learn seo. It kinda confused me even more.
I Bought about $50 worth of fiver gigs some 5 and some 10. after reading on the forums i figured i was f*cked but 3 months later no google hits and i have a da 18 and pa 19. I didnt pay much attention to what i bought but ended up with about 32% bare anchor text and the rest keywords.

Questions:

• If i had sent the links to a buffer web 2.0 will i have about the same result?
• I started a regular site, If i purchase a BHW service would the result be better since the cost are higher?
• Is a bad backlinking process like that ok but only for porn sites?
• Are fiverr gigs as dangerous as they're made out to be, should i avoid them in the future?

Thanks for looking at my questions my next site is showing potential i dont wanna mess it up with crappy link building

Some fiverr gigs aren't worth touching and some aren't that bad. If you have no troubles so far, then go with the domain, it will carry a bit more weight than a fresh domain. The fact that it also has a bit more age to it as well will help out.