Welcome to the site. Im going out a limb and assuming MrBig is an inference to stature. If that be the case Ill go further out on the limb and state the stock shocks will work just fine for you; until youve tried the 1-5 settings and find you need more spring. The Progressive 440s are often the preferred route taken. Im a light weight 235# and stocks shocks work mighty fine. I will assume the optional shocks for the R3 vs Classic, Im unfamiliar with the offering, are the difference between trim or stocky; and, single sport versus coupled or fully packed tourer operandi.
There are several hard bag applications; and mounting hardware routes. I run OEM leather panniers with OEM fixed mounts.