I think it looks great
Also think the head bolts will be just fine
I know On the 1.8t lumps the headbolts are never a issue. Infact the only reason folk use apr is because you can re use them if you remove the head where as the OEM ones need to be replaced everytine you remove them
It's not a highly stressed bolt anyhow, the most stressed bolt is the conrod fastners. So APR ones are a must.
I'd certainly rather keep my personal set up over this, and I'd personally raster have another well sorted 20vt over It too but this looks a serious bit of kit and I doubt you cod make all that for anywhere Close to 4.5k
To me, it's close to the ultimate ABF set up
Gearbox let's it down IMO
Should have gone 02j with a wave track and modified ratios (just my opinion)