1.6 RR setup
It would be pretty figgin stupid to buy fancy springs for a stock cam setup because with aftermarket cams springs are a maintenance item so if you later do a cam you need to do springs with it. Not only so they match the cam but so they are new and fresh rather than half worn out.
A reasonable intelligent person would say to run something cheap and sufficient like the stock LT4 springs which are a very nice match to a stock cam with 1.6s.
I would consider 7/16" studs and guideplates so you have room to grow there. Like I said though springs become a wear item with aftermarket cams so the "overkill for now" principle does not apply to that part of this project.
Far as a nice kit for just springs and rockers I don't know of any. You could cal a vendor and talk to them but if you call someone like Summit you will just get someone else reading the catalog to you and wont likely get a really good setup. If you go the "let a vendor spec it" route call someone LT1 specific.
Also cheap titanium in particular can be considered a wear item so I wouldn't bother with that on a stock cam either. titanium can be a fickle material and a simple scratch can become a crack. Not saying titanium is a bad material for retainers. I just wouldn't bother with it now. A $35 set of LT4 springs will fit stock retainers and be a great match for now.


