Meghan Markle’s friends reportedly fear she’s taken on too much as she gears up for her latest business venture, RadarOnline.com can reveal. The Duchess of Sussex, 42, may be excited for the release of her new wine line, but sources claimed there’s been chatter among her inner circle that she’s setting herself up for failure. While Meghan has kept tight-lipped about the new lifestyle brand – and has yet to post anything on the official American Riviera Orchard Instagram – trademark applications gave some insight as to what fans could expect from the brand. Home decor, kitchen items and preserv…