Customizing a turtlbebot3 with larger wheels

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Hi, I've got a Turtlebot3 Waffle Pi and extra waffle boards but this robot is too small for my application. I am trying to put on larger wheels and make the robot twice as long and twice as wide. Could you please tell me what do we need to change in the offcial ROS turtblebot package after customizing the turtlebot waffle to a larger one? I still want to do LSD laser sensing and SLAM. But the position of the LDS will be higher and the distance between wheels will be bigger. How does these changes influence the use of the open source ROS turtblebot package? Thank you so much in advance.