With those plans I would definetely pull that cam out and put in something smaller. I'm building a 6.0 with ls6 heads and a comp cams lsr cam. Look into one of those cams maybe. You can probably sell thatms4 cam for a fair amount especially if it is new. I drive my truck everyday to work in socal traffic and have no issues with the set up I have in my sig. It makes good power for what it is but I want more. You will be happy with the 6.0. When I finished my swap and drove mine for the first time it was a night and day difference between the 5.7.....and I went down to a 5.3. Good luck with the swap and feel free to pm me with any questions.
SOLD:1992 ECSB Silverado lm7 5.3 Swap, TR220 cam, Circle D 3200stall, CBM street tune, Schoenfeld LT's, LS1 efans, transgo hd-2 60e, custom CAI, Autometer gauges
Best 1/8 E.T. 8.86 @ 77.8 on 275/60/15 MT ET Streets with 1.92 60 ft.
2000 RCSB 4x4 Lq9 swap...stock except mild 4l65e....for now