Hey Adam.
Are you wanting to buy the strings as a set or as singles? You are better off buying them as singles, this way you can achieve graduated tension across the strings, but it can be slightly more expensive. Also, the only string manufacturers that supply singles are Ernie Ball and D'Addario, to my knowledge, so you may be limited in your purchasing options.
But anyway... a regular 10-46 set tuned to standard will give you approx. 103.59 pounds of total tension. The Beefy Slinky from Ernie Ball is a strange set. The 22 gauge from this set gives you over 22 pounds of tension. This is a huge jump from the previous string, (15) which is only around 16.25. The 22 is also 3 pounds HEAVIER than the next heaviest string (30) at 19.87 pounds. "Optimal for detuning"? I don't think so, Ernie! Replace that 22 with a 20 (18.2 pounds) and you'll be closer to a better feeling set of strings. The rest of the strings are OK, but I'd be tempted to replace the 54 with a 56.
Ernie Ball Beefy Slinky 11-54
D: .011" = 15.57
A: .015" = 16.25
F: .022" = 22.03

C: .030" = 19.87
G: .042" = 20.89
D: .054" = 19.19
Total = 113.8 pounds
11-56 Custom Set (from singles)
D: .011" = 15.57
A: .015" = 16.25
F: .020" = 18.20
C: .030" = 19.87
G: .042" = 20.89
D: .056" = 20.92
Total = 111.7 pounds
As you can see, the custom set is superior in terms of graduated / progressive tension. String manufacturers are stupid.
As for the Power Slinky set, I wouldn't even go there. Look:
Ernie Ball Power Slinky 11-48
D: .011" = 15.57
A: .014" = 14.16
F: .018" = 14.74
C: .028" = 16.91
G: .038" = 17.13
D: .048" = 15.03
Total = 93.54 pounds
Atrocious. This set would feel and sound terrible. There is nowhere near enough tension on those strings, and tension is all over the place anyway. There would be more tension on the high E than the low E!