If flying off grass, you might even be better off without the tail wheel, just a skid. Do make sure you have toe in on the main gear and that the main gear is not to far forward, right under the leading edge of the wing is a good starting point. You will soon find you can taxi as well without the tail wheel as you can with it. You will learn to use the elevator while taxiing, you can't just hold full up and get buy, you need to let the tail get light in the taxi turns and blow the tail around with the prop blast. Good practice in learning to use throttle and elevator as well as rudder during taxi.