G'day Chudsy. A compression check is a good idea to see if all cyls are within spec ( ~150psi). These are pretty low cost nowadays. Just use compressed air to clean out the plug recesses after the ignition coils are removed--keep them in order. After the comp test ( hopefully all is spec) use some rubber fuel line on the plugs to 'start' the threading ( they are deeply recessed) before apply the torque wrench.
Here's tutorial that covers it nicely.
Part 2 -How to Test for a Blown Head Gasket (4.7L Chrysler, Dodge, Jeep)
Note: H20 pumps are an easy fix on the 4.7 and worth getting a good one if not sure. On mine, the front timing chain case (behind the pump) and across the front of the block has some corrosion / pitting where the water exits the pump. I've seen images of cases that have corroded through where the H20 pump could not circulate the coolant and some where coolant invaded the engine. Key learning was to always use the correct coolant and never neglect the scheduled changes.
Note: On the H20 pump inspection/replacement, one needs to stabilize the pump pulley to loosen the fan nut. I just fab'd one out of 1"x 1/8' steel strap and measured the distance in the pulley where holes are to receive the pins (2)(made out of 1/4" x 1" bolts and a nut to secure the pins (bolts). Held vertically, rotate the pulley so the pin holes are at ~ 8 o'clock and 10:00 o'clock(front view) and with the pins in the pulley, a large adjustable wrench can defeat the fan nut. Use gloves as a precaution as there is not much room if things slip. A Haynes manual or FSM is a great investment.
Good luck and keep us posted!