Anyone who goes in mine always comments, without fail, on how flat it is in the corners - ARBs will solve that issue for you. You need to remember that the blob is at least 250kgs heavier than your classic - still keeping the interior lol?
I've had the knock. Took the struts off and stripped them down, nothing found and knock gone - since then the knock had came and went - I've never looked into the reasons behind or cures of but I can tell you one thing for sure, the actual shock absorbtion is not affected by the knock, they function perfectly. Perhaps if my shocks were all gubbed I'd consider coilovers but not when they are perfectly good.
Save your cash and fit PF front discs and pads - best mod to date for me I'd say