I'm trying to come up with a budget for a rebuild of my A14 this spring. I've never rebuilt an engine before so I'm not sure what I should replace. I'd like to do 1.00mm overbore and a mild cam grind. The head has already been resurfaced, valve job and pressure checked. Here's a list of all the stuff I could replace when I rebuild. Can anyone tell me what's actually necessary and what's overkill? Or anything I've missed? This will be a daily driver.

Camshaft bearings
Connecting rod bearings (with oversize options that I don't really understand)
Crankshaft main bearings (also oversize???)
Expansion plugs
Timing set
Oil pump

All seals I assume should be replaced (rear main, crankshaft seal, oil pan etc).

Is there a way to tell if all of those bearings need to be replaced or not?

What about double valve springs? A set is ~$100. Is it worth it or necessary, or does it depend on the cam?

Last thing I can get $15 pistons which correct for the increased compression ratio due to the overbore, bringing it back down to 8.5:1. Sounds way too cheap to me. Any idea how much the compression ratio will be raised with 1.00mm overbore and stock pistons? It's an A14 with H72 head.

Sorry for all the questions but like I said I'm new at this. Really appreciate the help -
MIchael