Have a look at the new comp cams sportsman series.
They should meet your criteria. You can get them with a bronze
Bushed axle or needle bearings. They have an .800 wheel, pressure fed edm directly to the axle, can be used if desired with pushrods oiling, staked axles that do not use "C" clips that can fail.
They also have the link bar moved inboard, so you will not have to grind the block. The proper way to use solid rollers in a small block is to tube or bush the block precisely for the reasons that Charles has posted. I personally do not understand this trend for everyone to use a hydraulic cam in a performance application.
