I like hearing all the different replies, without having BS thrown in too. Welcome to the site Anthony.
Personally, I'd rather build what I want the first time, but when you're unsure of what you want, then that's when hearing everyone's experiences becomes invaluable.
Good luck with whatever route you choose. My next built motor will not be the stock jug screamer I have now. It works great for the supermoto it was built for tho.