I want offer 3 offers backlink :
Tier 1 : 200 forum profiles backlink
backlink forum profile, most important for avoid penalty.
Tier 2 : 2,000 Do-follow backlink
Backlink for optimized google search, for promotion index more fast.
Tier 3 : 2,500 Wiki backlink
Backlink tier 3 for good your increase DA and PA