There are so many roads east of you that you could spend months exploring them and not find all the good routes there are.
However, may I suggest you park up in Mouldsworth and do the Manchester 100 route backwards, as far east as Knutsford. Then when you're on Ashley Road (the long straight a few miles off the start of the 100), turn right into Tatton Park. Go through there, through Knutsford town centre, south down the A50 Toft Road. It's a bit fast but its a huge wide road and I rarely have any issues there. Turn west at some point, wherever you like (Middlewich Road for instance), just aim for Davenham (south of Northwich), a lovely little village that'll let you skirt past all the main roads. Make sure you use Davenham Road and Shipbrook Road, it's all very picturesque. There's a cycle lane on the A556 at that point, a bit bumpy but useable. Use that to continue west and back home. That'll be about 50 miles or so.
Vale Royal Drive, just slightly west of Davenham, looks a lovely place to cycle but I'm not sure if its a right of way or not. Have a look at it on Google Maps.
You've also got Cholmondely to your southeast, very nice down there.