I don't care for the vinyl braided hoses there. I would use PEX to the washer box.
It looks like SharkBites on 1/2" copper there.
That would work for PEX too.
Yes there is a washer box up there (and it leaks). I have a new one with MPT connections as part of this project.
It's hard to see but the trap is almost directly over the CPVC. I don't think more CPVC or pex will work due to excessive bending. I thought about going behind the trap but even that may cause too much stress. Note also the hot and cold are skewed towards each other. So if I extend them it will cause stress at the point where they come through the floor. I could try and widen that space in the floor but am afraid of damaging the pipe -- then I will end up in the crawlspace pulling out insulation.
If I could find a 1/2" x 36" steel braided flex line, it would be great. But instead I ended up with 12" + 24". As mentioned at the top of the thread, the galvanized may not corrode but will eventually rust. So I went ahead and ordered a pair of brass MPT nipples. This isn't ideal I know but it seems like the best way short of tearing up the wall and re-plumbing everything.
I'm mainly trying to get this project done so my wife will have a sink to use while I go about updating the kitchen sink/faucet/disposal & countertops. So I'm trying to avoid scope creep as much as possible...