Most feel two or three is best. Equipment, type of work, prop size, all have to be factored when making the decision of the best crew size. Longer drive times means more people being paid to ride in a truck. Larger properties will get done faster with 3 men crew with 1 man edging/trimming and 2 men running mowers. Then a 2 man crew with 1 man edging and 1 man mowing. However when starting out you are better off working solo. If you do not have 40 hours a week of work for yourself then you don't hire a helper. You need help with a clean up you hire someone to help with that job. Once you hit 48 hours a week you can hire a helper to work part time. Two days 4 hours a day. As the volume of work increases you can increase the days and hours that you have a helper.