1997 Honda Civic Excessive oil use and blue smoke at startu

Used car did not have any maintenance history. Added an oil "cleaner" just before changing the oil & filter along with a fuel system cleaner. 5w-30 convential oil & a honda oil filter was used. Replaced oil pan and seal and air filter. I Started the car the next morning and lots of Blue smoke came out of exhaust pipe. This happens everytime the car sits overnight & sometimes at freeway speed going up a steep hill there may be a little blue smoke. Once the car gets to operation temp the smoke goes away. Had a compression test done when the car was warm & it was 100 for each cylender. On a 200 mile road trip it consumed 1qt of oil. There are no visible leaks, the car got 35mpg with a mix of highway/city driving. It has plenty of power. Checked the spark plugs & they looked burned to a crisp. Hardly any node left. I can't believe the car even runs and runs well with these spark plugs. Again I have no idea how much maintenance has been done to the car if any esspecially after looking at the spark plugs. With that a timing belt may also need to be changed. Do you think that I have bad rings or valve seals, crankshaft seals, all the above or none of the above? Would replacing the spark plugs & wires along with rotor & cap and pvc valve and fuel filter help or should I stick with the rings and seals and timing belt first?