If you can gather some more fifa 17 coins your growth in the game will be even faster. That's why it's important for you to waste no possibilities.
EASFC Catalogue Items
Start by going to the EASFC catalogue and exchange your credits for coin boosts. As soon as you play your first matches you'll receive a fundamental bonus to your clubs financial health. Each item can only be redeemed once. Try to have the coin boost active in your first match. You can buy at once all the items your XP level allow you to buy. The system will make the management and will guarantee that you will receive the bonus in every match until the items expire.
Don't forget to redeem the Increased Transfer List Size and the Increased Transfer Targets Pile Size items as soon as possible, because this will allows you to up your volume of trading. Another catalogue items you should purchase are balls and kits. Many people don't know, but these have high discard values which means you can make some more coins with them.
Especially at this stage, you should take advantage of everything that is free like Manager Tasks reward that can be accessed through 'My Club'. A few minutes should be enough to perform the 18 easy tasks and to get your hands on a free gold pack. The cards of this pack cannot be sold, but they will help you to reduce costs.
If you have fifa 16 coins or another platform, try to find someone who's interested in trading for fifa 17 coins. It won't be easy and you'll certainly be doing it for a disadvantageous ratio. But at least it'll be worth some more coins for your first investment.