Alrighty then,
You've got a recon engine, I would advise you to stay well clear of pulling the head off; if it's freshly rebuilt, as soon as you pull a head off you'll need a new head gasket and head skimmed. Leave it for the moment.
Felix is dead right, the best place to start is with a camshaft change. You've got the exahust and extractors, so the next logical step is a mild-warm street grind.
1- Hydraulic lifters or Solids? You'll need to identify them, if you don't know, speak up. It's not that hard to tell.
2- Find a spare camshaft and lifters to match; you'll need to know which of the above you have and get the right one.
3- Research cams, there's lots of great info on them on the internet. Get familiar with the following terms; lift, duration, overlap etc. Once you've done that, there's a bunch of discussion on the Rollaclub about what grinds work for corollas.
4- Decide which sounds right for you, call the Cam grinder (Tighe, Wade etc), send your cam and lifters to them. Wait a couple of weeks, check letterbox.
So far you've only spent ~150 bucks tops, and you're a bit more well read
5- Time to bite the bullet; To swap a cam isn't that hard, but I wont go into that now. A workshop manual will give you loads of info. Even a beginner should manage to swap a cam in a weekend, and as long as you check and double check, it's pretty hard to get it wrong.
When you get to 5, let us know. Changing a cam, from my point of view, is the best option now, because you can get big gains without too much intrusive work. Head work is a waste of time with a stock camshaft and will be much more expensive.