Hi 
My personal opinion is that it's too soon. I personally feel the crypto market is un-settled so developing an EA for crypto markets could 1. Be too soon and 2. Could end up failing once the market settles more which would have wasted your time and money.
Another reason why it's not possibly the right time is something you already mentioned, the spreads. They're just way too big for EA's unless your strategies are so good that your entries are perfect....
So in summary If it was me, I would wait. Stick to manual trading crypto, especially if you're making good profit in futures etc so rush.
Hope this helps
My personal opinion is that it's too soon. I personally feel the crypto market is un-settled so developing an EA for crypto markets could 1. Be too soon and 2. Could end up failing once the market settles more which would have wasted your time and money.
Another reason why it's not possibly the right time is something you already mentioned, the spreads. They're just way too big for EA's unless your strategies are so good that your entries are perfect....
So in summary If it was me, I would wait. Stick to manual trading crypto, especially if you're making good profit in futures etc so rush.
Hope this helps