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Can't wait to see your results, man. Good luck! (And, my advice, don't spin all of them at once. Only do it when you are too tired to keep rolling them one by one).
Well, today's
prizes are at 48, so I guess I will wait a few more days... I guess we will see 50 once again. I have 738, who will spin them all manually!? I am just waiting to see them at 50 and it will be spin them all at once! I like to play slots and spin them, but this is like free spins, so I just wish to see the prizes in the end!

It's 46 right now, but I think with current fluctuations there's a good chance of having them at 50 some time soon. Overall I think it's a good strategy. Why not to get 10%-20% more of all the rewards?

Today, for the first time, I decided to buy 2 WoF spins per free roll

We'll see how that turns out.
^^Did WoF became something you can get by buying it? ~
Actually, yes. You are not buying it with real money, but you can do that with your RPs:

Technically, the max you can get is 120 WoF spins for 24 hours, after you paid 4,500 RPs for 5 WoF spins per free roll. But you are right that basically all of that is free stuff.
I am still on my old strategy but I think it works better overall than this of the WoF,of course with WoF if you hit a big prize (which happens extremely rarely these days) you have won but in normal conditions where big prizes are rare,I think it is better to play like me,use like near 1200 RP to buy Free Btc Bonus of 1000% and I do this right at 16.00PM when I leave work so I can click a few times during afternoon and night and I can also click during work about 7-8 times.By doing so you will get like 700-900 satoshi daily which can bring you 30-40 FUN token,I find this to be the best way to spend the RP-s.I buy like 30 FUN everyday as minimum but now I am running out of RP so I will have to stop for sometime until I replenish my RP.