[QUOTEIt is pretty flat I don't have any equipment as yet I"m budgeting for it aswell as upkeep. that's why I phrased the question that way. yes sir you're correct on the grass I need to get the old weeds out I suppose and get down to the real dirt and prep it for SOD that I will lay myself. ][/QUOTE]
In that case consider a tractor in the 20/25 HP range[colour of your choice] with a bucket, rear finish mower/MMM mower, a home drag for leveling, harrows [purchased or home built]and a Tiller. A disk may be substituted for the tiller if that fits your plans better.
Move some dirt around with the bucket to rough level the area, till it, level using the drag, till again, drag it again and do this two or three times several weeks apart. This may allow weed seeds to germinate so you can cultivate them under. Then spread the grass of your choice. For 5 acres hand broadcasting will work. Harrow and wait for the results. You may wish to over seed once or twice at a latter date. Let the grass grow to a minimum of six to eight inches and then start a regular mowing sequence. Mow quite high for better grass quality. Don't forget the soil tests and proper soil augmentation based on those results.
Then start in on the dedicated rock gardens and such things. Here the tiller would suit you best.
Now; that said there, will be a hundred different ways to arrive at the end product. Pick one that best suits your needs and location.
Five acres of sod is a lot of sod. My back aches just thinking on it!