Flat tappet to solid roller...

I talked to Lunati for over an hour discussing all the details and this is what they came up with and cure to my needs:

Hydraulic roller camshaft:
Voodoo Retro-Fit Hydraulic Roller Cam - Chrysler 361-440 294/302 - Lunati Power

• Advertised Duration (Int/Exh): 294/302
• Duration @ .050 (Int/Exh): 243/251
• Gross Valve Lift (Int/Exh): .560/.565
• LSA/ICL: 110/106
• Valve Lash (Int/Exh): Hyd/Hyd
• RPM Range: 2600-6600

I would be at .600 lift with 1.6 rockers with it.

Solid roller lifters:
Vertical Bar Solid Roller Lifters - Chrysler V8 B 383 - 440 (Set Of 16) - Lunati Power

• Application: Chrysler V8 B 383 - 440
• Diameter: .903"
• Weight: 247g
• Seat Height: 1.83"
• Quantity: 16

Seat height of these lifters alows me to reuse my pushrods.

Two choices of beehive springs:
1: .600" Lift Beehive Spring - 1.445" O.D., 1.210" Coil Bind, 370 Lbs./In. Rate (Qty 16) - Lunati Power

• Type: .600" Lift Ovate Beehive Valve Spring
• O.D. Big End: 1.445"
• I.D. Big End: 1.000"
• O.D. Small End: 1.095"
• I.D. Small End: 0.650"
• Coil Bind: 1.210"
• Seat Load: [email protected]"
• Open Load: [email protected]"
• Rate (lbs/in): 370

2: .700" Lift Beehive Spring - 1.445" O.D., 1.220" Coil Bind, 408 Lbs./In. Rate (Set of 16) - Lunati Power

• Type: .700" Lift Ovate Beehive Valve Spring
• O.D. Big End: 1.445"
• I.D. Big End: 0.990"
• O.D. Small End: 1.186"
• I.D. Small End: 0.731"
• Coil Bind: 1.220"
• Seat Load: [email protected]"
• Open Load: [email protected]"
• Rate (lbs/in): 408

They said that if I'm not willing to rev it out and shift at aroud 6600 and limit revs to 6800 this combo will work well and the softer spring will do the job given weight reduction thanks to solid lifters, lighter retainers etc.
With harder seat and my 1.880" install height the seat load seemed high.

Also many of their customers swapper hydraulic lifters for solid ones with good hp increase.
Due to less agresive lobes suggestion was that actually such combo will live longer.

How about that?