cool thats good luck with the new second hand donk eh!
If you go with the A14 head and cam remember to have your old lifters reradiused for about $40 that way they wont wear the cam out when you put the cam in.
A Bottom end will cost about $300 if you use good parts which can be purchased from swmotorsports.com.au.
It's a bug you will catch I am warning you it starts out with a simple engine swap then a head swap then cam, valve springs, dizzy, extractors, flat top pistons, electric fuel pump, thermo fan, head work oh mate don't do it!
BUT it is all good fun and well worth the process
good luck with your project