Ok guys, I need some help. I am building a 468 for my Jeep and need some insight. I have a few parts questions and would like some CONSTRUCTIVE remarks. No brand bashing without some meat and potatoes to back it up.

1978 2 bolt Block w/ 781 heads:

All bearings are Clevite H series coated. High flow oil pump and oil bypass delete.

Speed Pro Powerforged ZL2465F60 Pistons
http://www.summitracing.com/parts/TRW-L2465F60/

Total Seal Maxseal rings M2090-65
http://www.summitracing.com/parts/TSR-M2090-65/

Lunati Voodoo Camshaft 60202LK w/ suggested springs, retainers, and locks. Along with Cloyes double roller timing chain, cam button, and cam plate.
http://www.summitracing.com/parts/LUN-60202LK/

Of course a seal kit from Sealed Power
http://www.summitracing.com/parts/TSR-M2090-65/

RPM Air Gap intake
http://www.summitracing.com/parts/EDL-7561/

Holley 750CFM Double pumper for street
Propane for playing in the dirt (dual fuel hat)

I am looking for advice on a couple things. I am wanting about 10:1-10.5:1 compression. I am pretty sure I am gonna have to mill some off the heads to get the compression up. Anything to look out for or any idea on how much I will have to take off to reach my goal? And will Positive Valve Guide Seals work with these heads, or do I need to have them "fitted"? Also, I have read alot of good about the gapless 1st rings, but some bad. I am looking at them from a longevity standpoint. Not from the myth that they give you more power. I have read they are good from the standpoint of leak down staying more consistent over a period of time. I will not be reving this motor past 5500rpm, but it will be exposed to lots of off-camber, banging around, 8 hour a day thrashing. Any other suggestions? Critiques?
Thanks,
Clay