I managed to spend about 1400 when I did mine as I had to replace my radiator, ignition leads, turbo gaskets, valve guides, fluids, cleaning stuff, filters, miscellaneous new nuts and bolts seals which aren't included in the engine set. Then tools aswell engine stand, piston ring compressor, valve spring compressor, borrow a engine hoist.
If you've done similar work before and a lot of consumables are to hand its obviously much cheaper, I don't mean to discourage you but with many thing its easy for it to snowball.