Tecware has two mouse pads in their new Haste-series, which are extended 900 and 800 mm wide mats, so there's plenty of room for your keyboard, too. They have micro-woven tops and textured rubber backings, and one even has RGB lighting integrated into its edge stitching.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips