35 and 40 ft runs-Balanced will be expensive

Want to reposition my stereo on opposite wall and go up and down walls.Have balanced option between pre and amp but can't think of anything reasonably priced for such a long run so may just stick with cheap 14 ga speaker cables.Shame as while I am a cable skeptic I have a set of 8ft Monster 2.2 that went for $800.Right now I am using MIT 330 balanced but it's one meter.So stick with cheap long speaker runs or plonk down on maybe Kimber etc.The rest of rig ain't shabby equipment.Mac pre,Mesa Baron,$6500 Ehodin speakers.It's just I gotta live in this room as well as play HiFi.Thought about putting rig between speakers but ruins imaging.Thoughts?Cheap thoughts?