2 Things you have to do... No.1 Determine whether your heads are Useable or nor... No. 2 decide on how much you want to spend on this...
The answer to your question above about a new short block is this, The shortblock comes with nothing Dan, No Sump, no oil pump, no timing gear, no water pump, no Modine... You are looking at the guts of probably 600-800 for these parts alone depending where you buy them...
I mentioned to you before Dan that buying a Full newage STI 2nd hand engine may be the best and cheapest option, Sell the heads, Inlet manifold etc etc, and recoup some of the money.. Then get the Short block checked and new bearings fitted... You can use the modine and oil pump off this engine along as it had no bearing failure etc etc and that will save you another 400-500 odd euro
Or you could get a new STI motor built using a donor block.. unfortunetly again you will have to buy at minimum an oil pump and modine... so figure 400-500 in on the price