When Pigs Fly - Level 9 (Suggested) - Full Walkthrough - Next Gen Update - Fallout 4

The Next Gen Update new quest "When Pigs Fly" has quite a few interesting weapons rewards that a new player would like to have in his/her arsenal as soon as possible. So I created a new character in "Normal Difficulty" and came up that , in my view ,the suggested entry level to attempt this quest in a certain successful fashion , is level 9. I show here what weapons and apparel I had and how I obtained them as well as a full walktrough of the quest.
Recommended key gear to successful do this quest at level 9:
- Combat shotgun which can be obtained freely at Longneck Lukowski's Cannery as shown in the video below
• Early Game Free Combat...
- Overseer's Guardian : A two shot sniper combat rifle that can be bought in Vault 81
- Champion chest armor has the dense modification (handy to better sustain damage coming from mines) which can be bought in Fallon's basement at Diamond City
New weapons provided by this quest:
- Nail gun (you need to buy it from Suggs)
- Saw Blade Launcher (you need to buy it from Suggs)
- Legendary Pipe grenade Launcher (Free at Marvin's store after killing the guards)
- Piggy Bank mines (Free at Marvin's store after killing the guards)
- Piggy Bank Fat Man ( Free after killing Marvin )
- Legendary Chinese Grenade Launcher Rifle 9as reward from Suggs for killing Marvin and recovering his schematics)
Happy to answer any related question in the comments below