Need 360 top end advice

Should I buy adjustable rockers Vs. keeping the stock ones on my 360 heads? I was advised to go adjustable due to my new summit cam at duration 284, lift 480. I just don't see the point considering I have hydraulic lifters...
I understand the advantage of roller rockers, but don't want to spend that kind of jack right now. Advice?

My current build: mostly stock

360 punched 30 over w/ newly machined crank
new stock pistons (was a mistake but now I'm stuck with em)
new summit cam as listed above
double roller chain and gears
aftermarket alum intake
headers and holley 600 carb
rebuilt heads w/ 1.88 and 1.60 valves, using thick blue felpro gaskets
Heads have a mild mill .014

Also - These heads were used on a 360 with the mopar purple cam. They have dual springs. Will they work with my cam? or how do I look up how to match cam with the right springs?

Thanks!