3.P Tiered Gestalt Rules+Can I spend my CPs on bonus feats?

Yes.  Treat bonus feats acquired in this way as though they were a tier 3.5 class.  So each feat would cost 6 CP, except for the first, which would cost 4 CP.  These feats can be any for which you qualify.  In some cases, feats might be especially High Value and cost twice as much.  Likewise, I'd allow players to purchase Low Value feats at half the normal cost.  I consider any feat that has never appeared in a handbook or guide to be low value - basically flavor feats.