I have always torqued the tires on all my vehicles to 100 ft./lbs. You should be good anywhere between 85 and 100.
As for the oil life, a quick Google came up with this -- definitely more straight forward than on my Accord and Odyseey:
To reset the oil change indicator system (after
performing the scheduled maintenance), refer to the
1. Turn the ignition switch to the ON position (Do not
start the engine).
2. Fully depress the accelerator pedal slowly three
times within 10 seconds.
3. Turn the ignition switch to the OFF/LOCK position.
NOTE: If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary repeat this procedure.
'78 CJ7 -- Chevy 350 SBC, Holley 4-BBL, TH700R4, B&M Performance Shifter, Dana 300 w/ Twin Sticks, 3" Shackle Lift, 3" Body Lift, D30 Front (Disc), AMC 20 Rear w/ Moser 1-Piece, 4.10's, 35x12.50/15 General Grabber MT's, Cragar Soft 8's (15x8 w/ 4" BS)