Hmm.

My opinion about this, if you don't care about Kushina [Christmas] then you can go and spend in Lucky Stars Wheel. Spinning the wheel will automatically give you a great number of returns from the Training Potions and New Refine Optional Packs and while spinning, you may also get lucky to get Madara Uchiha [Ten-Tails Jinchuriki] and use your stars to redeem Kimimaro [Halloween] vs. the fact where Fireworks Packs only drops less-priority power-up items.

But if you feel that lack of rebate due to the current ninja that is in the Fukurokumaru's deal, then you better wait for better events that will come sooner or later since November and December are coming. Thank you.

Glad that you came to a conclusion and made your progress with your spending plan. I kinda feel what you meant by luck, trust me I had my fair share of RNG, having Ningendo and Shurado from Lucky Stars Wheel, and last year Obito but that's all xD ..

I will let this thread open for now in case you have further inquiries regarding these matters and we'll be here to give you our opinions and advice for you to have a guide. Have fun and good luck.

Hmm.

Most probably, +nin/-res or -def but his Chase Skill is Taijutsu so it would be better also if you will give him a +atk/-res or -def. Thank you.