First full disclosure. I have used PayPal in the past for payment processing.

Yes and No… First read there terms of service and understand payment holds and how PayPal uses them. Also make sure the products your selling arent prohibited. I also advise you to read terms of service agreement.

Now to give you an example, If you have a sudden spike in sales paypal will automatically put those funds on hold till customer receives order and they may place an additional 90 day hold on your funds to make sure there aren't any problems with those orders.