Hydraulic roller lifter questions (LA 318)

I'm building a 318 that will be running a hydraulic roller cam (most likely a Comp Cams Xtreme Energy 224/230). So a couple of questions:
1. Do I have to run the Comp Cams matching lifters, or will other brands of hydraulic rollers (Howard's, Hughes, etc.) be OK? My idea (if it will work) is to buy whatever brand is the lightest weight.
2. Hughes lifters say they have through-pushrod oiling. Since I'm running an LA block, I don't need that, and I'm pretty sure I don't WANT that - seems like the pushrod oiling hole in the top of the lifter would just leak/spray oil into the lifter valley which would just add to windage issues. Are there any retrofit hydraulic rollers that don't have the hole for through-pushrod oiling, or is it a non-issue?
3. Hughes recommends beehive springs, the other brands don't mention this. But I can't find any company selling beehive spring kits for an LA small block...???
Anyway, would appreciate any advice and experience running this cam (or similar) in an LA SBM, especially regarding lifters and valve springs. Thanks in advance...