Back to SEO - Need advice

Guys
i used to rank well from 2008 to 2010.
after that i shifted my focus on adwords and FB etc after all of the sandbox stuff
Now heading back to SEO
I want to get well equipped first. i started reading more about SEO on BHW
i believe one authority website is better then plenty of micro niche websites.
Suggest me all of the tools from keyword research to Creating web 2.0 Backlinks to competition analysis to tracking and everything
I believe Longtailpro is the one tool i needed. the second one maybe GSA . SEM RUSh maybe .
Just want to hear what you guys would suggest
THanks

Some tools


For keyword research:

LTP (also get the platinum addon if possible.. I personally find it more useful.. skip it if less on budget)
Semrush (go for cheap trial accounts for a start if needed.. skip it if needed.. LTP can do the basic stuff)
Skip both above and go with Adwords KP if do not want to spend them both

Tier 1
PBN links
Web 2.0 links
Social Signals
Most of the Tier 1 links are manual nowadays. So, not much tools in that.

Tier 2
GSA
Kontent Machine
Some spinner
You can mix a few in those.. for example, I have two content creators and two spinners for variety

There are tons of other SEO tools but perhaps you can take those for a start. And you can get small stuff done with Fiverr too especially for lower tiers if you do not want to invest in tools.

Keyword research - longtailpro and GKP.
Tier 1 - rankerX and hand made web2.0
Tier 2 - gsa ser, KM3.
Link indexing - speed-links