You know it wouldnt be a bad idea to have a valve job done at this point, is blue smoke coming out the tailpipe? Oil consumption is an indicator as well.
If you have a bad or leaking head gasket, how is your compression? Also inspect or replace the timing chain while your in there. Its better to change this kind of stuf f while you have the engine apart than to have it done in the near future. Saves on labor this way.