I def wouldnt go any higher..with 35s and od, 3.73s would be as high as I would go...
With 3.73s, 35s, and a .7 od, your only turning 1629rpm at 65...
4.11s will get you 1795rpm....if I was gonna change that's more what I'd look at....
I went with 4.56s on mine...I wanted around 2000rpm at 65 with my LS/v4500
Heres a rpm calc thatll help you determine things...just fill in blanks at bottom of page...
http://www.csgnetwork.com/multirpmcalc.html