Zeta Mats (Fleet Shipments vs Ability Challenges)

So I know I'm going against the grain, but I'm using fleet coin to buy Zetas. I have 5 already and expect to be at 20 by Christmas. The only Zeta that I'm concerned about getting is Qui Gon. My Jedi are good enough for Top 5 regularly on my shard, but that extra boost by QGJ leader should push me to the top...temporarily. If I can get 1st everyday for a couple weeks my plan is to use the 500 crystals to buy the fleet pack everyday. This should offset the blueprints I missed out on while farming my first Zeta. Nevermind the fact that you can get lucky with fleet pack. Scored 85 wedge blueprints 3 days ago. The real problem is Sun Fac, Darth Maul and Geo spy character shards.