Already done and captured what I could. It was helpful to get some names, dates, and locations which I'll need when requesting the official documents. Unfortunately I wasn't able to find the critical immigration c-file # or an official naturalization document or official date, hence the need for the USCIS search before I can even request the actual document. I was able to find some immigration paperwork with dates that indicate I should be eligible though, so at least I know I'm not completing the process for nothing.
Thanks for the link, I haven't used that site before. Fortunately I only need one document from Italy, a birth certificate. I got a quote for about $120 from a highly rated service from a citizenship Facebook group so that's my plan B if trying to get it myself doesn't work out.
I'm confident I'm eligible based on the research I've done. My great grandfather was born in Italy and my grandfather was born in the USA before my great grandfather naturalized. Nobody since would have renounced their right to Italian citizenship and my path is all male which makes it a bit easier, no marriages needed as proof of lineage but of course those marriage documents are still required to complete the process.
I live in Texas so I have to deal with the Houston consulate. My question about PA documents was more about obtaining birth, death and marriage docs from PA which is where the vast majority of the key family milestones took place. I have a pretty good handle on most of it, I just haven't requested them from the state yet. Marriage docs being with the counties is more tricky since they aren't in a centralized place and there's one in my lineage in particular that will be hard to track down. My family is the product of my great grandfather's 2nd marriage, and my living relatives know little about when and where his first marriage took place. This is likely to be the hardest thing for me to find since I don't know the county where they were married and couldn't find any clues on Ancestry.com.