I would strongly suggest pricing out your rebuild parts,and checking availability there first.Most 1.9 stuff is VERY expensive,and hard to get in the US.
If you are looking for a core engine,try to find one that doesn't need boring,as the pistons are quite pricey.That will save you some good $$$ to put towards other things.
You would probably be better off to get a good used running motor,or get one already rebuilt.
I can supply and ship either one,but stock is low right now.