As a MH owner, I can say that what you are planning can be done with a MH, but if I had it do over again, I'd step up to the SC2 or better. If cost is a big factor, go with the 28" version. UScutter has a 28" SC with stand and catch basket for $450. The 38" MH with stand and no catch basket is about $380, so for only $70 you get a better cutter and a catch basket. And if you're doing long deigns the catch basket will come in very handy as well as the superior tracking of the SC2.
I also recommend the 28" cutter because 24" rolls are pretty common, the next size up is only 30" and while still pretty common, is that extra 6" really worth it? Most large designs can be broken down to smaller sections which can also make install easier.