1st. why on earth would you want more than 1600lb clutch and for the life of me i cant figure how that would have any effect on crankshaft main bearings 
2nd. i have marlins 1200 NON ceramic, and its got right at 30,000 miles on it , when i had it out back in the summer, it showed no signs of wear, after 30,000 miles, i tow, i race, i drive it like a stole it, and now visible signs of wear
3rd, how much did the exedy1600 and southbend clutch cost ya ??
my marlin 1200 kit was $180 i think
I am saying that you do NOT want more than a 1600 lbs pressure plate. Read my post. The effect on the crank bearing is that it prevents oil to go to onw of the bearings, thus killing it. I could only find one reference to it and forgot the exact technical details. Be assured its true that over 1600 lbs will be bad for your crank bearings. Thats for the 3VZE.
What motor are you running ? 22RE? 1200 is fine for that as is 1600 for the 3VZE.
The Exedy kevlar setup was aorund $300 .. am happy to pay $100 more to have a lasting clutch. Organic OEM has worked for me but it was just time to try something new....
Matt
