I could try my chance one time for each casino who offer this kind of deposit bonus if they allow this strategy ?
Could it be considered as bonus abuse? (For me its not as i am only making one account)
I find it too much risky since your strategy since your strategy is purely revolving on a 10% chance which is very low winning percentage while your target is 35 times wager of your original bankroll and the 200% deposit bonus. You should play slowly using low house edge games or rely on much volatile games hoping to win a huge jackpot to hve a great headstart for your bankroll.
Your computation assume that you will 1/10 guarantee while you can lose more than that before you can win a single spin since every bet is not related to each other winning percentage. X35 roll over requirements is too much for calculated bet strategy of yours. Use much slower strategy using low house edge games then play 50:50 chance game to recover some of your loss to average your risk.
This is indeed very risky, i could aswell reduce the risk splitting the amount in two to have something like 20% chance.
The goal is to have a low chance to hit a big amount then if you win it will be really easy to do your wager, while with a standard strategy you tend to slowly lose all your balance before meeting the wagering requirement.
Indeed you can hit a jackpot playing slots, but what are the chances? I think its way lower than 10%.
I would be okay with your strategy if we could calculate this.