Quoting 687OF2000:
Valve seals rarely go unless valve guides are bad. Valve guides usually cost (much) less than seals.
I don't know about the 4g63, but on crappy Honda 1.5's they cost $1.00. Press them out, press them in, or have a machine shop do it. Should not be expensive. Or DIY for the win!
If your guides are bad and you do all that other work, those brand new seals will be hogged out within 5000 miles and you will have smoke again......
This isn't necessarily true on the 4g63. And putting guides in ain't gonna happen with the head on the car like you can do with just a stem seal installation. I put seals only in 1051 about a decade ago and they held up for well over 5k miles afterwards. I would try seals first, then if it smokes later on due to guides, pull the head and have it rebuilt with new guides/seals/valves/etc.