318 LA roller block questions

K.. so few quick questions (I hate asking these but i would rather learn from others mistakes before i do it myself).. was going to go with PRW Stainless then this morning i do a quick search and see posts about the bushings basically wearing through on them. I have seen posts of galling on ductile iron rockers (otherwise i would get the mancini set) And i just don't trust aluminum long term on a driver. Soo.. without spending a crazy amount of money what are the options? I tend to overthink stuff which leads to stress which is what i seem to live on at this point :)
Second.. Since i plan to use OEM magnum lifters couldn't i do pushrod+shaft oiling or would that drop pressure and flood the top end? (this was just a thought)

And third thing... Is there an advantage to 1.6 ratio over 1.5 other than a little more lift? I don't get why people go 1.6 when doing a build if you are just going to order a cam anyway, why not get the cam with the lift you want to start with? This is just more of a curiosity that i might be missing something with 1.6.

I see some guys sending out rockers to get redone at $300+ a set, at which point you are spending HS type money..

P.S. Sorry bout the questions but i have never used aftermarket rockers on a mopar.. last one i did was a ford which was just.. buy whatever and bolt on and they worked well forever it seemed.

Also.. since someone will ask, if i did the math correctly my spring pressure at max lift should be 305#

Looking at the mancini aluminums $579 for HS actually doesn't sound bad and i wont be putting a ton of miles on.. might be my choice. My brain sucks :)