Welcome to CPAElites - the original incentive CPA affiliate marketing forum online, solely based on "Cost Per Action".
Be a part of something great, join today! Learn CPA marketing with CPAElites, we will teach you everything such as the best CPA networks, CPA offers with highest payouts and best conversion rates, unsaturated CPA niches, most effective traffic sources and more.
I realy doubt that you found a low comp niche with 50k either you are looking at the adwords competition or the kw is generic or irrevelant without any conversions.
You can blast it with gsa and gsa also builds multi tiered backlinks but you don't need to make several tiers, as for the actual number of backlinks you can go nuts as youtube videos are not penalised by google so quality doiesn't matter but quantity does
In your original post you said "50k searches" not 3k seaches as you mention in your second post also 50k comp is not a low comp niche.
Let me brake it more down for you
1 global monthly searches= how many people earch for the kw in one month, I suggest you use exact searches
2 google adwords competition= has nothing to do with seo competition but with the adsence ads competition
3 seo comp= is the nr of sites whic are dirrectly targeting the kw with seo and they peobably have emd or at least the kw as a subdomain
When you are making kw research you should always take in consideration the trending because the monthly serches is an avarage of several months so the kw can have for ex 1k mo searches and when you check out the trending it only got 100 monthly searches in the past 30 days.