>How much time do you spare to configure the bot per day, as I understand we have to find the right market conditions pair by pair.
Count on a full time job. You've got to read a lot. It's absolutely not plug and play, especially if you wish to make some profit.
>Can you confirm that we have to use bollinger BB for trand market and Gain EMA for Spike market ?
I don't know what spike market is - but the strategies are various, none is better, some are safer.
Again, you've got to read a lot.
>Can I use the gunbot on my computer for testing and then loan a VPS and run it with the same licence ?
Sure, it's what I'm doing, no VPS. And if you move it, just keep the same API keys, the actual location isn't a problem.