Who do I farm in cantina shipments?

I started a second account about 10 days ago and I'm now level 47, and getting top 20 daily. I was expecting some changes to be made during the level cap increase, so I've saved up my tokens and now I have 5000 just sitting there. I'm considering going for QGJ or old daka or risking going for fives in the hope he becomes strong. Anyway, what do you think I should do and why (keeping in mind the fact that I'm F2P on both accounts)?