Too many questions here, i have another one i wanna hear more about - the speed of your platfotm, not much said here but think it can be a central issue
of course speed/latency is vital for any kind of arbitrage, but with a nice trade algorithm speed is not in the first place
Shame people with a slight knowledge of how arb works try to explain to others the strategies

your bot or whatever will never ever make good arb till the speed is high enough... any packet loss -> forget about money
okay, but Arbitao claims to have only positive algorithm, you can't lose many with it