Do I need both ToP and SSHE

[PorkchopDJG]

You still didn't answer what game you primarily play.

If you play limit holdem live 10/20 and under, SSHE is the BEST book ever written on loose/passive calling station type games.
It's a must have for all limit holdem players.

Theory of Poker is probably the best all around book on general concepts that apply to any type of poker game at any level.
This is also a must have.

If you play primarily online limit holdem "Holdem Poker for Advanced Players" may be best.
If you play primarily no limit just get TOP for now.
If you play primarily NL tourneys get Harrington on Holdem 1-3.