do i need to change out the triple trees if i want to add 4" fork extensions and if i do a straight post 8" riser and a straight or slight V-bar handle bar. i'm working on getting my bike to fit me im 6'8" 230 any suggestions are also appreciated

Hello all, I am new to this forum and biking in general after 20years away. This forum has provided me with a ton of information for my bike and riding. While doing research on what aftermarket seat to get I did not find may postings specific to my situation. Lets start by saying that I am...