I have a 2019 27.5 stump jumper LT 150/140 travel. I'm thinking of adding a 29 front wheel but I would also like to reduce the travel front and back while I'm at it. 150/140 is too much for my area and I'm thinking 130 fork and 130 or 120 in the back. The trails I ride on ride on are very slow rocky with roots, punchy up and downs, tight twisty, no jumps, top speed hardly ever gets above 10 or 11 mph. I want the 29 front wheel for roll over and the 27.5 for quick acceleration up the short steep techy climbs. The SJ is a size XL. So I would need a 29 fork to begin with but where do I go from there with keeping the geometry appropriate. thoughts?