Hello folks!

Here is a game in question:
8 deck, ENHC, DAS, no RSA, no surrender, S17, penetration varies between 1.5-2.0 deck cut off

I'd read that for shoe games you would need to have a higher bet spread. Would 1-20 be an acceptable bet spread in order to be ahead of a 8 deck game? Or would you suggest even a higher one like 1-24? My next question is why? I am a red chipper player (5 euro) from Europe and by far i have been successfully using reko with a 1-10 spread without heat. (recreational-hobby player)
But to be honest i have a feeling that if i popped up my bets from being 2x5 euro up to 2x100 it would raise some eyebrows that's for sure-I assume...
Don't you guys think it would be TOO obvious and logical that i am up to something?!

Thanks for any input