get a hydraulic cam, set it once and never worry about it again.
I would recommend this Lunati VooDoo, Designed by the same guy who designed alot of comp cams cams including most if not all the xtreme series.
http://www.summitracing.com/parts/LUN-61605/RequiredParts/?prefilter=1
and choice of lifters
http://www.summitracing.com/parts/HRS-91211/
http://www.summitracing.com/parts/HRS-91212/
Should be fairly close to what you had if not a tad bigger, with a cam as big as what you were looking at, i think you'd need different gears. And the combo i posted is less money also which is nice.
Nickey