Yeah, the free 100 spin bonus is really good for getting new user interested. For me personally, I don't really eager to multiply my bankroll, I just play for fun in gambling and I really happy when I got bonus like that, maybe I am a bonus hunter lol.
It's fine, as long you are enjoying.
Plus, the free spin slot choose was really good for user. Usually, they are giving in (Zeus) or (Sweet Bonanza) these slot having a high volatility really hard to hitting bonus comparing to big bass bonanza.
Really suitable for your gameplay, for user who having a small bankroll to started.