I think if you're talking dry sump money, a custom pan is basically an entree compared to the cost of everything else.
Drop in in-sump baffles aren't hard for a fabricator to do.
Skid as in burnouts or drifting? Big difference in sustained G's?
I have a similar oil distribution block on my engine. If you look into how Springs work, what they're saying about preload and adjusting oil pressure is actual BS.
Besides, the preload is acting on the same side of the spring that the oil is.
I do find that I have higher cold pressure though because the adjustments screw limits oil flow to the face of the plunger noticeably when the oil is cold. Hot pressures are 40 to 60psi. Pre oil cooler temps were 120°c in traffic 100% stock, 90,000kms engine L36. With the cooler and a faulty aeroflow oil thermostat, I get 70°c at night, 90°c in traffic and 100°c if I give it heaps for ages on a hot day with only the rad fan for airflow.
Make sure that that bloody distro block is proper flat and has a good gasket when you install it making sure the bolts have even torque. It wants so very badly to leak oil. Silicon all the ports.
Pushlock hoses and barb's. Depending on where you mount the filter it can be too much heat, movement and vibration for cutter style or compression fittings.
Fill the hoses coming out of the distro with as much oil as possible. My engine refused to make oil pressure for an uncomfortably long time until I back filled all the hoses with oil.
If you do find a good dry sump kit for the Ecotec, tell them you know of someone else who's interested in one. (Me)