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I haven't gotten to this quest yet, but I know that it is possible to skip quests by spending your cash that you have.
I made the choice of spending 5 dollars upfront to get a boost in cash and coin. I am about to level 8 and I only have 2k in coins left, buying the 5 dollar starter package is literally the only reason I haven't given up on this game.
As far as adding strangers for the purpose of this game, you can set people to restricted, which basically still sets your profile to private for them, yet still allowing you the perks of being their friend.
It is what I do for anyone I add for monster galaxy.