A 5 acre field equates to 217,800 sq ft. Accounting for some loss in fence rows, etc, you probably are talking about a field on the order of 1000 to 1320 feet long and therefore 165 to 218 feet wide. So with a two bottom plow with 12 moldboards you'll be making 80 to 110 passes. If your dimensions are more square, you'll be making more passes but shorter ones. I'd figure on about 2 solid days of plowing. Remember, you'll be plowing in both directions, down and back, but still it's a pretty big job. The TC 35 shouldn't have a problem with a small 12" two bottom plow and could even handle a 14" two-bottom if the soil's not too hard. Ag (vs Industials) tires will help big time with traction, so if you have Industrials, you might figure on a little more time.