Dimension Films and Molly Shannon are in final negotiations for the thesp to co-star with Tara Reid and Ashton Kutcher in “The Guest,” to be helmed by David Zucker.Company is also negotiating with Carmen Electra and David Koechner to join the cast. “The Guest” centers on a young man (Kutcher) who has a crush on his boss’s daughter, played by Reid. He finds himself in a wacky predicament when she asks him to house-sit for her mean-spirited father. Shannon would play a former co-worker who tries to win back her job. Pic, penned by David Dorfman, is slated to begin production in April, with Gil Netter (“Dude, Where’s My Car?”) and John Jacobs (“The Ringer”) on board as producers. Co-heads of production Andrew Rona and Brad Weston will oversee the project for Dimension.