1) Normal is around 25 psi.
2) See picture for order.
Snug down then following pattern torque to 60 in-lbs. The following sequence torque up to 75in-lbs in 5in-lb increments. i.e. 65 in-lbs. 70in-lb ending at 74in-lbs.
3) The manual calls for a 30wt oil above 50F. Since you rebuilt a good quality 10W-30 would be ideal from now on.