Hey, Nuru...Here are a few deck specs right from the JD Grounds Care Purchasing Guide.
Cutting Width:__________ 54"_____ 60"
Overall Width:__________ 65.9"_____ 72.5"
Overall Length:________ 35.7"_____ 37.25"
Cutting Height (both):_____ 1"-4" Adj. by 1/8"
Deck Thickness:_________ 11ga._____ 10ga.
Tip Speed@ 3,200 rpm:___ 15.5k fpm_____ 14.9k fpm
Mower Wheel Dia.:________ 5"_____ 8"
Acres per hour @ 4.5mph:___ 2.0_____ 2.125
Tri-cycler Mulcher: Both Compatible
Shipping Weight:______ 185lb_____ 302lb
The 60 is identical to the one that I run on my 445 except for the drive shaft length. The deck guage and weight says it all (4200 and up use 7ga/w3tcompact/icons/cool.gif). You've got the tighter cutting radius correct. The lowered center of gravity (300lb
ballast) will smooth your ride a bit. Consistent and medium-firm tire pressure is critical to a good cut with a MMM, so you may want to stabilize that during the mowing season. I have never had scalping problems with my 60. The JD design suspends the deck with a four-point lift and you set your guide wheels a smidge above the ground on a flat surface. The design also incorporates anti-scalp rollers under the nose. Any size deck will scalp if not calibrated well. Bumps and berms can be scalped by the best equipment. You will learn your "flat-top" spots and cut them with the outboard blades
Just anther quick thought: Unless you are doing a high % of your work with the loader/blade/3PH implements, you may want to look at those <font color=green>$$expensive$$</font color=green> wheel weights, suitcase weights and/or a ballast box for convenience. Loading and unloading tires seems like a hassle and you don't want to mow frequently with that kind of weight. As someone mentioned, you will end up with a hardpan lot and you won't need that MMM after mid-summer. Just my $0.04 worth (inflation, you know...pun intended/w3tcompact/icons/grin.gif)
Regards,
Pete