If I would start BTCmining this year do you guys think that it would still be profitable? After all there is already lots of miners out there not counting the farms. 
It really depends on how much machines you can mobilize to focus on mining bitcoin. You really have to do the math yourself, there are plenty of mining calculators out there that can give you a solid estimate as to how much you will be earning hourly, daily, monthly and annually. You also need to take electricty and hardware costs into account.