I prefer to stick to core, unless you have a great character concept that simply can't be done in Pathfinder. In general the classes and also Prestige classes are weaker than 3.5, but for me it's the story that counts so I'm not too strict. For example, Abjurant Champion is a good class mechanically, but does not make sense for a wizard that doesn't specialise in abjuration spells.
Thanks I'm finding Pathfinder has enough differences when compared to 3.5 that I was actually reading all of the books to get an idea of what I want to do. I'm thinking I'd like to play a Master Summoner. Do you allow the Multiclass Variant from Pathfinder Unchained p. 88? If so, I was considering choosing Cleric of Abadar (I think the theme goes well with what's mentioned in the Player's Guide for Kingmaker). I almost forgot! Are we allowed to use Words of Power? It's also in the Ultimate Magic book.
I am glad you mention the unchained Summoner. The default summoner's eidolon is very powerful and I like the unchained idea of reducing its evolution points as well as giving them subtypes.
Master Summoner looks like a great archetype, note that the eidolon will be half as strong, even after the reduction from Unchained. If you choose the cleric, Abadar is indeed a good choice too. I haven't seen words of power in play yet, but I have heard good things about them. I would like to see you use them, that'll be awesome!
Alright, one more question - I tend to do things that don't make my character any stronger, but allow me to immerse myself in the world a little more. You had mentioned that for you the story counts, so would you allow the Landlord feat from Stronghold Builder's Guidebook for Dungeons & Dragons? It's not replicated in any Paizo product.
I think it's okay for this campaign. I would have to reconcile the rest of the Stronghold Builder's Guidebook with the Downtime and Kingdom Building rules already in Pathfinder, but at a glance it looks usable. You may find that by that high level you will have other options.
I didn't want to take up the game with why I put myself at 1 HP but here it is:
Zork started out at 13 because he had some damage from before. Then you said:
Oh yes! I forgot the nonlethal damage for marching too hard, and the fatigue that came with it. But that was only 4 nonlethal damage?
You should track nonlethal and lethal damage separately. See, 1 point of healing heals both 1 lethal and 1 non-lethal at the same time.
When the sum of the two is equal to your HP, you become disabled, if greater than HP, then you're unconscious. This is something confusing my tabletop players at the moment as well. Personally, I find it easier to track damage taken (2 columns, 1 for nonlethal as well).
One final note, the fatigue should have imparted a -2 on rolls, but I will overlook that. When Jhod cast his heal, it also healed the fatigue. But that isn't because of the spell, it's explained why in the Forced March rules.