Sweet, thanks for the advice. When I brought the engine home it had lifter trays, I quickly tossed them and will get new ones.Great choice on the cam. Your motor should make a ton of power, sound really good idling and be very streetable. You can easily make that cam sound really wild or really tame with tuning.
If you're a small block guy, you've probably already noticed how much easier the Ls motor is to work on. My only complaint is the fact the heads have to come off to change the lifters. I suppose if I'm at that point I should just have the motor out anyways.
I used new LS7 lifters in my motor and so far, haven't had any issues. The general consensus seems to be they're a great lifter for the money.
If you haven't already, make sure to get new lifter trays/guides/cups (everyone calls them something different). Cheap insurance.
Agreed, the LS is so much easier to work on so far compared to my old motor! The only finnicky thing I noticed was the care needed to get the front/rear set right. With tips from TEXAS82GP I used a metal framing square, and the Kent Moore front cover alignment tool he let me borrow to ensure everything was dead on!!!