I've been cold filtering (after cold crash conical) using 1.0 micron filter w/ 5-7psig CO2. Filter clogs after 3-4gl xfer to corny keg; leading to filter changeout during racking. I tend to go thru 3 filters for 10gl batch. Another option I will try, dual filters together (5 micron primary, 1 micron secondary).
I'm also considering use of March pump or self-prime pump but have concerns about aeration, heavy foaming in keg. If you've tried these filtering methods, pls. Let me know your results.