As all above have mentioned, there are alot of points to consider whether to cut your own or a kit pack........BUT
which ever route you take you will enjoy the building of the chassis, & know that the forum is always there to assist if you come across a "hiccup", I found that getting the chassis into a 3D item really is a most satisfying part of the build, it sort of "comes to life"
Whichever route you take, may I wish you all the best for your build, its great to have another Roadster being created
cheers
andy